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.

Category: AMERICAN POETRY 
Clue: He wrote "Memorial Rain" for his brother Kenneth MacLeish, a pilot whose plane was shot down during WWI
archibald macleish

Category: SUPERHEROES 
Clue: For a while the Hulk was gray, but now he's this color
green

Category: CLASSIC NOVELS 
Clue: In this novel, Lucy Westenra "went to the window and looked out, but could see nothing, except a big bat"

dracula