Definition: 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].
Input: Paul Eisen, the self-professed Holocaust denier, has given Jeremy Corbyn his support in an extraordinary blog post in which he says that he has been close to the Labour leadership contender for more than 15 years. 'One evening 15 years ago I cycled over to see [Corbyn],' he writes. 'I was just beginning to establish Deir Yassin Remembered [a controversial, pro-Palestinian pressure group] in the UK and I wanted him to join. 'I'd hardly begun my feverishly-rehearsed pitch before his cheque book was on the table. 'From that day on, without fuss or bother, whether DYR was flavour-of-the-month or the maggot-at-the-bottom-of-the-food-chain, he attended every single Deir Yassin commemoration.'Paul Eisen, a self-professed Holocaust denier, says that he has been close to Corbyn for more than 15 yearsHe has come out in support of Corbyn's campaign on his blogEisen wrote that Corbyn has attended 'every single' one of his annual events and has even donated money to his anti-Israel pressure groupEisen's group is seen as so extreme that it was disowned by the mainstream Palestinian Solidarity Campaign in 2007Corbyn has been sympathetic to Hamas, Hezbollah and the IRA in the past 
 Question:'I question that there ever existed homicidal gas-chambers… Deny the _!.
Output:
Holocaust