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:
Dreams from my father, a story of race and heritance is about which politician?

Ex Output:
dreams from my father


Ex Input:
Aghios Nikolaos is a fishing port and holiday resort on which Greek island?

Ex Output:

agios nikolaos, crete