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.

[Q]: The Hudson River forms the boundary between the states of New York and what other?
[A]: new jersey


[Q]: Which John Legend song knocked Pharell Willams completely off the No.1 spot on the US Billboard?
[A]: all of me


[Q]: Where was nursing pioneer Florence Nightingale (the lady with the lamp) born?
[A]:
florence