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]: the boeing monomail was a monoplane instead of a biplane.
[A]: boeing monomail


[Q]: the division of moore is an australian electoral division in the state of western australia.
[A]: division of moore


[Q]: theanine is a chemical that you find in tea and in some mushrooms.
[A]:
theanine