instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
According to the bible, Zaccariah was the father of which New Testament figure?
answer:
bible


question:
Which English king was married to Eleanor of Castile?
answer:
eleanor of castile


question:
In which American city are the Bruins Ice Hockey team and the Celtics Basketball team based?
answer:

boston bruins