TASK DEFINITION: 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.
PROBLEM: 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?

SOLUTION: yeah yeah yeahs

PROBLEM: Which English football league team play their home games at Griffin Park?

SOLUTION: brentford

PROBLEM: Which element is signified by the letter 'K'?

SOLUTION:
potassium