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: The Foo Fighters used rock and roll to battle back against the Westboro Baptist Church after the extremist group began to protest outside the band's show in Kansas City, Missouri, on Friday night. Or should it be called Rick and troll? Foo Fighters frontman Dave Grohl and his bandmates rolled through a group of protesters outside the Sprint Center on the back of a pickup while blasting Rick Astley's 'Never Gonna Give You Up'. While the band was 'Rickrolling' through the crowd, they trolled the group and held up signs reading 'You got Rickroll'd (again)' and 'Keep It Clean.' Rickrolling is 'a method in which a prankster makes a fake link to the music video of Rick Astley's Never going to give you up,' according to Urban Dictionary.Westboro Baptist Church protested Friday show in Kansas City, MissouriBand were on pickup blasting Rick Astley's 'Never Gonna Give You Up'They held up signs reading 'You got Rickroll'd (again)' and 'Keep It Clean'The Foo Fighters and WBC have gone at it in the past, including in 2011 
 Question:The WBC responded to the rolling rally on Twitter and said: 'They can sing at us or #rickroll us but @foofighters will only ever get a BIBLE message from _.

Westboro Baptist Church