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

Example Input: Who composed 'Belshazzar's Feast' cantata?
Example Output: belshazzar's feast

Example Input: Field Marshal Arthur Wellesley, shares his better known title with which Southern Hemisphere capital city?
Example Output: arthur wellesley, 1st duke of wellington

Example Input: Which 1910 comic novel by H G Wells features the Potwell Inn in Sussex?
Example Output:
h. g. wells