You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

[Q]: Category: CABINET OFFICERS 
Clue: He was the last Secretary of State to serve in the post under 2 presidents
[A]: henry kissinger


[Q]: Category: FAMILIAR PHRASES 
Clue: The phrase "Flower Power" was coined by this poet in the 1960s
[A]: allen ginsberg


[Q]: Category: U.S. HISTORY 
Clue: This president signed the bill to create a transcontinental railroad; he didn't live to see its completion
[A]:
abraham lincoln