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

Example Input: Which cartoon character had friends called Velma Dinidey and Daphne Blake?
Example Output: daphne

Example Input: 'Arthur Clennam', 'Jeremiah Flintwinch', and 'Edward Sparkler' are all characters in which Dickens' novel?
Example Output: arthur clennam

Example Input: Who wrote the play Still Life, on which the 1945 film Brief Encounter was based?
Example Output:
brief encounter