You will be given a definition of a task first, then some input of the task.
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].

Daily Show host Jon Stewart took his life into his hands on Monday night when he entered the wrestling ring to spar with WWE star Seth Rollins. The feud had been simmering between the pair for the past two weeks after current Money In The Bank-title holder Rollins claimed that he could do a better job of hosting the Comedy Central show. Stewart then issued a challenge to Rollins via a cell phone clip before the two men briefly came face-to-face on The Daily Show itself last week when Rollins got Stewart in a headlock. Scroll down for videos Daily Show host Jon Stewart took his life into his hands on Monday night when he entered the wrestling ring to spar with WWE star Seth Rollins as their feud continuedDaily Show host Stewart took his life into his hands when he entered the wrestling ring to spar with WWE star Seth Rollins as their feud continuedA feud has been simmering after the Bank-title holder Rollins claimed that he could do a better job of hosting the Comedy Central showAs Rollins was about to hit Stewart, WrestleMania opponent Randy Orton interrupted proceedings and gave Stewart time to kick Rollins 
 Question:The pair’s beef started two weeks ago when Rollins had proudly boasted that he had aspirations beyond being 'the future of _'.
Output:
WWE