instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
What is the alcoholic ingredient of a Screwdriver cocktail?
answer:
screwdriver


question:
Who is the most famous cartoon creation of Chester Gould?
answer:
chester gould


question:
The American 1893 Nix v Hedden court case determined (and still), for US customs taxation purposes, based on conventional usage, what to be a vegetable and not a fruit?
answer:

american