instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Court Philippe Chatrier, which has stands named after Jacques Toto Brugnon, Jean Borotra, Henri Cochet, and Ren Lacoste, is the main court of an international tennis venue in which city?
answer:
stade roland garros


question:
Which biologist was known as Darwin's Bulldog?
answer:
charles darwin


question:
In the British Royal Navy, which rank is between Captain and Rear-Admiral?
answer:

royal navy