Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

[EX Q]: women's suffrage is the right of women to vote and to be elected to an office.
[EX A]: women's suffrage

[EX Q]: a hamburger is a type of sandwich with cooked ground meat between the two halves of a bun.
[EX A]: hamburger

[EX Q]: bletchley park is an estate in milton keynes, buckinghamshire, england.
[EX A]:
bletchley park