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: ENGINEERING 
Clue: The first one, built in 1893, consisted of 2,200 tons of steel, rose 268 feet & had 36 cars each carrying 60 people
[A]: ferris wheel


[Q]: Category: AMERICAN POETRY 
Clue: Walt Whitman called this "the beautiful uncut hair of graves"
[A]: grass


[Q]: Category: HISTORIC AMERICANS 
Clue: In 1788 Cyrus Griffin became its last president
[A]:
the continental congress