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

Brenda Mae Tarpley achieved fame under what name?
brenda mae tarpley

Which popular Doctor Who villains, it was revealed in 2011, are to be given 'a rest' by scriptwriters?
doctor who

Which was Charles Dickens' first published novel, serialised in 20 monthly parts from April 1836 ?
charles dickens