Given the task definition and input, reply with output. In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.

Media playback is unsupported on your device Media caption The news was announced earlier than planned due to Catherine's illness, as Nicholas Witchell reports 
  
 The Duchess of Cambridge is pregnant with her second child. 
  
 Kensington Palace said that - as when the duchess was pregnant with Prince George - she was suffering from very acute morning sickness and was being treated by doctors at the palace. 
  
 Prince William and Catherine's second baby will become fourth in line to the throne, behind older brother Prince George, who is 13 months old. 
  
 The palace said the Queen and both families were delighted with the news. 
  
 Prime Minister David Cameron, Labour leader Ed Miliband and the Archbishop of Canterbury were among those to offer their congratulations to the couple. 
  
 Early announcement 
  
 Image copyright Reuters 
  
 By Peter Hunt, BBC News royal correspondent 
  
 For a second time, William and Kate have been forced to announce a pregnancy before the duchess passed the significant 12-week milestone. 
  
 For a second time it's because Kate is suffering from an acute form of morning sickness - though this time she's being treated behind palace walls and not at a private hospital with representatives of the world's media gathered outside. 
  
 The pregnancy has generated international excitement and will continue to do so but this impending birth will lack the constitutional significance of Prince George's arrival. 
  
 As things stand, the as yet unborn girl or boy isn't destined to be a monarch. She or he will occupy the same position as Prince Harry once did. His mother, Diana, used to call him "the back up". 
  
 Monday's announcement has performed one unintended but useful role for the Windsors. Headlines about the Queen's view of Scottish independence will be replaced by extensive coverage of a royal birth next year. 
  
 Read more from Peter 
  
 Overseas tour 
  
 The duchess's first pregnancy was revealed when she was just a few weeks pregnant with Prince George after she was admitted to hospital suffering from severe morning sickness in December 2012. 
  
 The sickness - called hyperemesis gravidarum - is a condition that may require supplementary hydration, medication and nutrients. 
  
 It affects 3.5 per 1,000 pregnancies, causes severe vomiting and can lead to dehydration, weight loss and a build-up of toxins in the blood or urine, called ketosis. 
  
 Media playback is unsupported on your device Media caption A beaming Prince William arrives at Oxford University to cheering crowds 
  
 Catherine had been due to join Prince William in formally opening a £21m China study centre at Oxford University but the palace said her morning sickness meant that she would no longer be attending. 
  
 The Duke of Cambridge arrived at the new study centre at about 13:30 BST, where he was presented with a bouquet of flowers by a young girl. 
  
 He told a well-wisher who sympathised with Catherine's condition that she may be over the worst of the acute morning sickness in a "few weeks' time". 
  
 Kensington Palace said the duchess's attendance at future events would be decided on a "case-by-case" basis. 
  
 Image copyright Getty Images Image caption The duke was presented with flowers by five-year-old Beth Barton when he arrived at the university 
  
 Image copyright Reuters Image caption The duke and duchess recently attended WW1 commemorations 
  
 Image copyright PA Image caption They visited New Zealand and Australia with Prince George earlier this year 
  
 She is scheduled to be among the guests at the opening ceremony of the Invictus Games in London on Wednesday evening along with Prince William, Prince Harry and the Prince of Wales and Duchess of Cornwall. 
  
 On Thursday she is due to attend a Drumhead service at Lee Valley Athletics Centre with William and Harry, and later with William to watch Invictus competitors taking part in matches and heats. 
  
 The duchess is due to make her first official solo overseas tour, to Malta for two days, from 20 September. 
  
 'Big brother' 
  
 The baby announcement came after the couple's first child, Prince George, had his first birthday on 22 July. 
  
 Prime Minister David Cameron said: "Many congratulations to the Duke and Duchess of Cambridge. I'm delighted by the happy news that they're expecting another baby." 
  
 Mr Miliband said: "Fantastic to hear that Prince George will soon be a big brother. Congratulations to the Duke and Duchess of Cambridge on their happy news." 
  
 Media playback is unsupported on your device Media caption How the world broke the news of the next British royal baby 
  
 Deputy Prime Minister Nick Clegg said the pregnancy was "fantastic news". 
  
 Scottish First Minister Alex Salmond said: "This is very happy news for any couple, and on behalf of the people of Scotland, I am delighted to send our best wishes to the countess and our hearty congratulations to the royal couple." 
  
 The duchess is known as the Countess of Strathearn in Scotland. ||||| Prince Harry welcomed the news that the Duke and Duchess of Cambridge are expecting their second child, saying it was “great” that he is less likely to become king. 
  
 The new baby, due to be born in April or May next year, will be fourth in line to the throne, with Prince Harry dropping one place in the line of succession to fifth. 
  
 The Prince, speaking after the announcement, laughed when asked about his reduced chances of becoming King, replying: “Great!” 
  
 He added he “can’t wait” to see his older brother the Duke “suffer more” with a new baby, joking he would “love” to see him attempt to cope with a daughter. 
  
 The Duke and Duchess yesterday announced they were expecting their second child, being compelled to go public with the news after the Duchess pulled out of a public engagement. She is suffering from the same acute sickness she endured while pregnant with Prince George, and is being treated by doctors. 
  
 Prince Harry, who has previously referred to his nephew Prince George as looking like a “young Winston Churchill”, welcomed the news of the Duchess’ pregnancy, saying it was “very exciting news”. 
  
 Prince Harry said his sister-in-law was “pretty poorly” but “doing the best she can”. Asked whether he could give the new baby any advice or “strategy” on being a younger sibling, he said: “There’s never a strategy. I think George will be over the moon. I think he will be thrilled having another small younger brother or sister.” 
  
 He added: “I can’t wait to see my brother suffer more”, saying if the Duke and Duchess’s second child is a girl he would “love to see him try and cope with that”. 
  
 “I hope the two of them have the opportunity to go through the process again with a little bit of peace and quiet,” he said. 
  
 Prince Harry’s comments reflect the Duke and Duchess’ relatively low-key approach to family life, after they spent much of Prince George’s first year out of the limelight. The young Prince, who turned one in July, has spent his first year in his family home at Kensington Palace, as well as in the company of the Duchess’s family at their home in Bucklebury, Berks. The Queen yesterday said she was “delighted” at the news of a second child for the Duke and Duchess. In a statement announcing the news, a spokesman for Clarence House said: “Their Royal Highnesses the Duke and Duchess of Cambridge are very pleased to announce that the Duchess of Cambridge is expecting their second child. 
  
 “The Queen and members of both families are delighted with the news. 
  
 “As with her first pregnancy, the Duchess is suffering from hyperemesis gravidarum. 
  
 “Her Royal Highness will no longer accompany the Duke of Cambridge on their planned engagement in Oxford today. The Duchess of Cambridge is being treated by doctors at Kensington Palace.” 
  
 David Cameron was among those who wished the couple well. The Prime Minister said: “Many congratulations to the Duke and Duchess of Cambridge. I’m delighted by the happy news that they’re expecting another baby.” 
  
 The Deputy Prime Minister Nick Clegg, a father-of-three, advised the royal couple to “stock up on as much sleep as you can” before the new arrival. He refused to be drawn on speculation that the news of a royal baby would help the campaign to keep the United Kingdom together, adding: “The last thing we should do with such wonderful, heart-warming news which will thrill the whole nation is to start bringing politics into it.” 
  
 Scotland’s First Minister Alex Salmond also sent his best wishes to the Duchess, using her Scottish title, the Countess of Strathearn. The Most Rev Justin Welby, the Archbishop of Canterbury, said: “Wonderful news that the Duke & Duchess of Cambridge are expecting second child. Praying for the family, and that morning sickness subsides.” 
  
 Mike Tindall, the rugby player and husband of William’s cousin Zara Phillips, said he found out about the new baby when it broke on the news, telling talkSport: “I just sent them a message saying it was nice to hear the news on the radio.” 
  
 The Duke of Cambridge thanked well-wishers during a brief walkabout at St Hugh’s College, Oxford, shortly after the news was announced. 
  
 He told one member of the public, who sympathised with the Duchess’s condition and expressed regret that she had missed the event: “I know, she wishes she could be here – a few weeks’ time.” 
  
 In a speech focusing on the centre’s facilities, he told guests: “I’m sorry that Catherine could not join me today. She is sorry to miss it, and she hopes to come back in the future to meet you all for herself.” 
  
 Dame Elish Frances Angiolini, principal of St Hugh’s College, added: “Our sorrow at the absence of the Duchess is more than compensated for by the great joy of that news for the whole country today. Everybody has been congratulating him, there has been great happiness about it – it was pretty clear he was very, very happy.” 
  
 The Duchess was scheduled to be among the guests at the opening ceremony of the Invictus Games in London on Wednesday evening, along with her husband, Prince Harry, and the Prince of Wales and Duchess of Cornwall. 
  
 The following day she is due to attend a Drumhead service at Lee Valley Athletics Centre with the Duke and Prince Harry, and later to watch Invictus competitors taking part in matches. 
  
 A spokesman said her attendance would be decided on a “case by case” basis, being too early to assess whether she will be present. 
  
 Speaking at an event to welcome team captains to London, Prince Harry, who spent a year organising the event, urged people who have not yet bought tickets not to miss out. He said in a video message: “To anyone else still thinking about buying tickets to the Games – don’t hesitate. It’s going to be an inspirational event and you won’t want to miss out.” 
  
 The Prince met the team captains before the official announcement of the Duchess of Cambridge’s pregnancy, and did not let slip anything about the news which was about to follow. 
  
 He will no doubt be disappointed that the Duchess is unlikely to attend the Games, which she had planned to do before she started suffering from pregnancy sickness, as her attendance would have increased worldwide publicity for the event. 
  
 In a BBC documentary at the weekend, the Prince disclosed that 23,000 of the 55,000 available tickets remained unsold. 
  
 Dave Henson, the British Armed Forces team captain who shares his 30th birthday with Prince Harry on Sept 15, the day after the closing ceremony, said: “There’s a whole international community of 'brothers in arms’ who refuse to be beaten by their injuries and we want to show people what we can do.” |||||

Prince Harry laughed today when reminded that Kate Middleton's pregnancy will knock him down to fifth in line for the throne. "Great!" he said, visiting competitors-in-training at the Invictus Games in London for wounded soldiers, the Telegraph reports. "I can't wait to see my brother suffer more" with a second child, he added—cheekily, of course—about Prince William being a dad. If the Duke and Duchess have a girl, Harry said he'd "love to see him try and cope with that." On a more serious note, Harry said Kate was doing "pretty poorly" but was coping "the best she can." (She's said to be very sick with hyperemesis gravidarum.) Harry also hoped the couple could "go through the process again with a little bit of peace and quiet." Asked whether he could offer his upcoming nephew or niece advice on being the younger sibling (to Prince George, in this case), he told reporters that "there’s never a strategy. I think George will be over the moon. I think he will be thrilled having another small younger brother or sister." The new baby will be sort of like Prince Harry in not being earmarked for a position in the monarchy, the BBC notes. Mom Diana used to say Harry was "the backup." (See why Prince William says it's been "a tricky few days.")