In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

[EX Q]: Has there ever been more at stake in any mixed martial arts fight? Jose Aldo is the only featherweight champion in UFC history, is undefeated in 10 years, and is ranked as the No 1 pound-for-pound fighter in the world. He couldn't have more to lose. At the same time, Conor McGregor has talked so much and made so many promises that a loss could seriously derail the Irishman's surging hype train and even cut the supply of his huge cash flow. This is the biggest fight in UFC featherweight history and of both of these fighters' careers. They also have the hopes of a nation on their backs, particularly McGregor who will once again bring thousands of travelling Irish with him to Las Vegas.Jose Aldo fights Conor McGregor at the MGM Grand on Saturday nightIt is biggest fight in UFC featherweight history and in both fighters' careersThe fight will be live on BT Sport 2 in the UK at around 3am GMT 
 Question:Both men are undefeated in the UFC with Aldo set to make his eighth title defence and McGregor looking for his sixth knock-out in his seventh _ bout.
[EX A]: UFC

[EX Q]: The grandmother to the young Australian boy who was infamously pictured holding a severed head in Syria, says it was an act his terrorist father Khaled Sharrouf would have encouraged the then nine-year-old to undertake. Karen Nettleton told The Australian of her fears about the psychological effects the incident may have had on her grandson Abdullah as he is known to be a 'clean freak' who was fond of clean clothes. The chilling photo was posted online by Sharrouf in August last year with the caption 'that's my boy'. It showed his son using both hands to hoist a decapitated head up in the northern Syrian city of Raqqa.Karen Nettleton believes terrorist Khaled Sharrouf encouraged her grandson to hold a severed head in SyriaThe grandmother to the young boy, Abdullah, says her grandson is known to be a 'clean freak'She has told of her reaction when she first saw the chilling image of her grandson last yearIt shows the then nine-year-old using both hands to hoist a decapitated head upThe mother-in-law of Sharrouf has begged the prime minister to help bring her grandchildren home 
 Question:With the deaths of Mohamed Elomar and likely _, my daughter and grandchildren more than ever need the love and care of their family to help them recover from the trauma, abuse and terrors of war they have experienced.
[EX A]: Khaled Sharrouf

[EX Q]: Choking smog may make you splutter, but it doesn't come close to the terror of Martian 'vog'. Scientists have found evidence of acid fog caused by volcanic eruptions on the Red Planet that's capable of devouring rocks. Nasa's Spirit rover detected signs of acidic vapour that caused rocks over 100 acres on Husband Hill in the Columbia Hills of Gusev Crater on Mars to go usually bumpy. A similar phenomenon is seen on Earth in Hawaii, where it is dubbed 'vog'. Planetary scientist Shoshanna Cole, an assistant professor at Ithaca College, New York, used a variety of data gathered by the rover's multiple instruments in 2003 to study the exposure of ancient bedrock on the planet.Experts found evidence of acid fog caused by volcanic eruptions on MarsUsed data collected by Nasa's Spirit rover in Gusev Crater on the red planetRocks were made 'bumpy' and less crystalline by acidic weatherSimilar phenomenon is seen on Earth in Hawaii, where it is dubbed 'vog' 
 Question:When the _ vog touched the surface of the rocks, it dissolved away some of the minerals, forming a gel, according to the theory.
[EX A]:
Martian

