instruction:
Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.
question:
The composer Frdric Chopin had a decade-long affair with which French author?
answer:
george sand


question:
What is the name of the race horse and the title of a 2003 film starring Jeff Bridges as the owner, and Toby Maguire as the jockey?
answer:
seabiscuit


question:
Throughout most of the series, who was the headmaster at Hogwarts?
answer:

albus dumbledore