question: For what event was the largest amount of signatures collected in an attempt to keep Kanye from performing at it ?
answer: Glastonbury Festival 2015
turker_answer: Glastonbury Festival 2015 was the event that the largest amount of signatures were collected in an attempt to keep Kanye from performing at it .
rule-based: The largest amount of signatures collected in an attempt to keep Kanye from performing at it was for Glastonbury Festival 2015 .