Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.

Example Input: Who played the title role the ITV series Ivanhoe, first broadcast in 1958?
Example Output: roger moore

Example Input: What is the name of the actor who plays Harry Potter in all the films?
Example Output: daniel radcliffe

Example Input: Who was an English naturalist who realised and presented compelling evidence that all species of life have evolved over time from common ancestors, through the process he called natural selection?
Example Output:
charles darwin