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]: Who, after marrying in 1791, and living in Naples, became the mistress of Lord Nelson, having his child, Horatia, in 1803?
[A]: emma, lady hamilton

[Q]: Who played the young Bilbo Baggins off to adventure in the 2012 film 'The Hobbit - an Unexpected Journey'?
[A]: martin freeman

[Q]: Who became the Mayor of New York City in 2002?
[A]:
michael bloomberg