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

In which British city would you find Barlinnie prison?
hm prison barlinnie

What sport features in the films `He Got Game` (1998), `Flubber` (1997) and `Celtic Pride` (1996)?
celtic pride

What was David Leans first film?

david lean