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:
Who is the husband of Helen of Troy in Troilus and Cressida?
answer:
menelaus


question:
In 2012 , which town became the first in Essex to be granted city status ?
answer:
chelmsford


question:
American real estate developer and rancher Mary Anderson is credited with inventing which operational part of a car in 1903?
answer:

windscreen wiper