Definition: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Input: Story highlights Goodluck Jonathan criticizes the girls' parents for not cooperating fully with police 
  
 Protesters take to streets in London again calling for the release of schoolgirls 
  
 Rallies were held around the world Saturday, mounting pressure on Nigeria to do more 
  
 A total of 276 schoolgirls were abducted, many still in the hands of captors 
  
 Amid mounting international pressure, Nigerian President Goodluck Jonathan spoke Sunday about his government's efforts to rescue more than 200 schoolgirls abducted by militants. 
  
 "Wherever these girls are, we'll get them out," he said, acknowledging that officials don't know where they are. The President criticized the girls' parents for not cooperating fully with police. 
  
 "What we request is maximum cooperation from the guardians and the parents of these girls. Because up to this time, they have not been able to come clearly, to give the police clear identity of the girls that have yet to return," he said. 
  
 Protesters took to the streets over the weekend. On Sunday, about 100 demonstrators gathered outside the Nigerian High Commission in London again, where they chanted "Bring them back!" as well as "Not for sale!" and "African lives matter!" 
  
 The mainly female crowd, from young girls to older women, also carried banners that read "These are our sisters" and "No child born to be taken." 
  
 Photos: Photos: Nigerians protest over kidnapped girls Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – Police in riot gear block a route in Abuja, Nigeria, on Tuesday, October 14, during a demonstration calling on the Nigerian government to rescue schoolgirls kidnapped by the Islamist militant group Boko Haram. In April, more than 200 girls were abducted from their boarding school in northeastern Nigeria, officials and witnesses said. Hide Caption 1 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – Women in Abuja hold a candlelight vigil on Wednesday, May 14, one month after the schoolgirls were kidnapped. Hide Caption 2 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – People march in Lagos, Nigeria, on Monday, May 12, to demand the release of the kidnapped schoolgirls. Hide Caption 3 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – Catholic faithful in Abuja take Holy Communion and pray for the safety of the kidnapped schoolgirls on Sunday, May 11. Hide Caption 4 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – Catholic faithful attend a morning Mass in honor of the kidnapped schoolgirls in Abuja on May 11. Hide Caption 5 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – Catholics nuns pray in Abuja on May 11. Hide Caption 6 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – A woman attends a demonstration Tuesday, May 6, that called for the Nigerian government to rescue the girls. Hide Caption 7 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – Community leader Hosea Sambido speaks during a May 6 rally in Abuja. Hide Caption 8 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – Brig. Gen. Chris Olukolade, Nigeria's top military spokesman, speaks to people at a demonstration May 6 in Abuja. Hide Caption 9 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – Women march Monday, May 5, in Chibok, Nigeria. Hide Caption 10 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – People rally in Lagos on Thursday, May 1. Hide Caption 11 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – Police stand guard during a demonstration in Lagos on May 1. Hide Caption 12 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – Protesters take part in a "million-woman march" Wednesday, April 30, in Abuja. Hide Caption 13 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – Obiageli Ezekwesili, former Nigerian education minister and vice president of the World Bank's Africa division, leads a march of women in Abuja on April 30. Hide Caption 14 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – A woman cries out during a demonstration in Abuja on Tuesday, April 29, along with other mothers whose daughters have been kidnapped. Hide Caption 15 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – A man weeps as he joins parents of the kidnapped girls during a meeting with the Borno state governor in Chibok on Tuesday, April 22. Hide Caption 16 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – Mothers weep April 22 during a meeting with the Borno state governor in Chibok. Hide Caption 17 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – Four female students who were abducted by gunmen and reunited with their families walk in Chibok on Monday, April 21. Hide Caption 18 of 19 Photos: Photos: Nigerians protest over kidnapped girls Nigerians protest over kidnapped schoolgirls – Borno state Gov. Kashim Shettima, center, visits the girls' school in Chibok on April 21. Hide Caption 19 of 19 
  
 JUST WATCHED Social media push for kidnapped girls Replay More Videos ... MUST WATCH Social media push for kidnapped girls 02:31 
  
 JUST WATCHED Police: 223 abducted girls still missing Replay More Videos ... MUST WATCH Police: 223 abducted girls still missing 02:01 
  
 "It's very important that everyone do something," London teacher Leyla Chery, who attended the demonstration with her 8-year-old daughter, told CNN. "We have ways to find the girls, but we haven't done enough and the government in Nigeria hasn't done enough. So we should definitely try to push them. I talk to my students in class about the girls." 
  
 Crowds from Los Angeles to London rallied on Saturday, carrying posters reading #BringBackOurGirls -- a campaign that began on Twitter after the mass abduction of the girls by the Islamist militant group Boko Haram last month. In Washington, protesters gathered at the Lincoln Memorial to denounce what they described as a poor response by the Nigerian government to rescue the girls. 
  
 The social media campaign has gained momentum with celebrities, such as singer Mary J. Blige, offering their support. Education advocate and Nobel Peace Prize nominee Malala Yousafzai, the Pakistani schoolgirl who made a miraculous recovery after being shot in the head by the Taliban, posed in a picture with the #BringBackOurGirls poster. 
  
 On Saturday, U.S. Secretary of State John Kerry called on Nigeria's President to step up efforts to find the girls, who were kidnapped April 14 from a school in Chibok, in the country's rural northeast. 
  
 Anger has been mounting in Nigeria over the lack of information about what efforts are under way to secure the girls' release. Many contend authorities are not doing enough and have taken to social media using hashtags #BringBackOurGirls and #BringBackOurDaughters to demand more from the government, a move that appears to have ignited a global call for action. Nigeria's Defense Ministry has said it is committed to the search. 
  
 In London, Matilda Egere-Cooper, one of the organizers of Sunday's protest, said she wanted to raise awareness about the "disastrous" situation in Nigeria. 
  
 "I think its so important that the Nigerian government do a lot more in finding these women," Egere-Cooper, herself of Nigerian origin, told CNN. "We are here today to lend our support in making sure that the girls are returned to their family. We also want to bring attention to women being in the center of various conflicts, wars that are happening around the world. We don't think it's right." 
  
 Speaking during a visit to the Ethiopian capital, Addis Ababa, Kerry called on the government to bring those responsible to justice. 
  
 JUST WATCHED Nigerian father: Know where our girls are Replay More Videos ... MUST WATCH Nigerian father: Know where our girls are 01:20 
  
 JUST WATCHED Nigerian dad: 'We lost our daughter' Replay More Videos ... MUST WATCH Nigerian dad: 'We lost our daughter' 00:51 
  
 "The kidnapping of hundreds of children by Boko Haram is an unconscionable crime, and we will do everything possible to support the Nigerian government to return these young women to their homes and to hold the perpetrators to justice," he said. 
  
 Boko Haram's name translates to "Western education is a sin," and the group especially opposes the education of women. Under its version of Sharia law, women should be at home raising children and looking after their husbands, not at school learning to read and write. 
  
 According to accounts, armed members of Boko Haram overwhelmed security guards at the all-girls school in Chibok, pulled the girls out of bed and forced them into trucks. The convoy of trucks then disappeared into the dense forest bordering Cameroon. 
  
 On Friday, Nigerian authorities updated the number of girls kidnapped to 276. At least 53 of the girls escaped, leaving 223 in the hands of their captors, police said. 
  
 Authorities said that the new figure for missing girls -- 223 -- could grow as police fill in spotty school enrollment records. ||||| Kano (Nigeria) (AFP) - Boko Haram leader Abubakar Shekau vowed to sell hundreds of schoolgirls kidnapped in northern Nigeria three weeks ago, in a new video obtained on Monday by AFP. 
  
 "I abducted your girls. I will sell them in the market, by Allah," he said, after reports that some of the 223 girls still missing may have been sold as brides across Nigeria's border with Chad and Cameroon for as little as $12. 
  
 Shekau added that the abduction had caused outrage "because we are holding people (as) slaves". ||||| Media playback is unsupported on your device Media caption President Goodluck Jonathan: "Wherever these girls are, we will surely get them out" 
  
 President Goodluck Jonathan has admitted that Nigerian security forces still do not know where more than 200 abducted girls are being held. 
  
 They were taken three weeks ago from their school in Borno state by suspected Islamist militants. 
  
 President Jonathan was speaking for the first time since their disappearance amid growing criticism of the response. 
  
 He has come under fire for not speaking earlier and his government has faced increasing anger from the public. 
  
 "We promise that anywhere the girls are, we will surely get them out," he said in a live TV broadcast. 
  
 The president said that despite searches by the army and the air force, the girls had not been found. 
  
 He asked for the co-operation of parents and the local communities in the rescue efforts, saying the "government needs assistance." 
  
 "It is a trying time for this country... it is painful," he added. 
  
 Image copyright AP Image caption There have been protests across Nigeria calling on the government to do more to free the girls 
  
 The BBC's Will Ross in Abuja says it appears somewhat astonishing that the girls cannot be found when there are reports they have been moved around in convoys of vehicles. 
  
 This seems to be a sign that there are parts of north-east Nigeria that are more or less off limits to the Nigerian armed forces, our correspondent says. 
  
 Islamist militants known as Boko Haram, whose name means "Western education is a sin", are believed to be behind the kidnapping of the girls from their school in Chibok. 
  
 They have waged a violent campaign in the north-east that has killed hundreds of Christians and Muslims. 
  
 President Jonathan dismissed the suggestion that negotiations were taking place to secure the release of the girls, saying it was impossible to talk to Boko Haram. 
  
 "You don't negotiate with somebody you don't know. The issue of negotiation has not come up," he said. 
  
 Image copyright AP Image caption Security has been tightened in Abuja after two recent attacks killed nearly 100 people in the capital 
  
 He said his government has spoken to the United States and several other world powers, including France, Britain and China, for help with its security issues. 
  
 "We are talking to countries we think can help us out. The United States is number one. I have talked to President Obama at least twice," he said. |||||
Output:
Islamist militant group Boko Haram has acknowledged in a video obtained by AFP that it's behind the kidnappings of more than 200 girls in Nigeria last month. "I abducted your girls. I will sell them in the market, by Allah," leader Abubakar Shekau says. He adds that "we are holding people (as) slaves." The Nigerian government has been slammed for what critics call a weak response to the April 14 kidnappings; activists say a woman who organized protests over the abductions has been detained, the BBC notes. President Goodluck Jonathan made his first public comments on the matter yesterday, reports the BBC. "Wherever these girls are, we'll get them out," he said, though he admitted officials do not know where the girls are. He also went on to knock parents for not giving "the police clear identity of the girls that have yet to return," notes CNN. Previous reports indicated the girls may have been taken to neighboring countries.