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.

[Q]: police action is a term for the use of military forces without declaring war.
[A]: police action


[Q]: spintronics is a kind of electronics that uses the tiny magnetic fields that come from electrons as well as their electric charge.
[A]: spintronics


[Q]: rape is usually defined as having sexual intercourse with a person who does not want to, or cannot consent.
[A]:
rape