Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Ex Input:
Which legal drama starring Martin Shaw ran for six series on BBC TV from 2001?

Ex Output:
martin shaw


Ex Input:
Feb 15, 1564 saw the birth of what famed Italian physicist, mathematician, astronomer, and philosopher, who discovered the first 4 moons of Jupiter?

Ex Output:
astronomer


Ex Input:
What is the name of the only Canadian province to have French as its sole official language?

Ex Output:

canada