Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.

Karen O is the lead singer with which band that made a breakthrough in this decade Yeah Yeah Yeahs, Coldplay, Kings of Leon, The Killers?
yeah yeah yeahs

What did Alfred Hormel invent?
spam

Who wrote March of the Meanies for the Beatles' cartoon film Yellow Submarine?

george martin