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.

What silver-grey/gray metallic element used in high strength steels has the symbol Mo?
molybdenum

In which country was escapologist Harry Houdini born?
hungary

Which US hip hop group recorded the 2009 album the E.N.D., gaining three No. 1 hits?

the black eyed peas