instruction:
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.
question:
In Keeping Up Appearances, who played Onslow?
answer:
geoffrey hughes


question:
Who wrote the 1964 play 'Entertaining Mr Sloane'?
answer:
joe orton


question:
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?
answer:

charles darwin