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]: enac alumni (also referred to as ingenac) is an alumni association based in toulouse, midi-pyrénées.
[A]: enac alumni


[Q]: the chinese postman problem is a mathematical problem of graph theory.
[A]: chinese postman problem


[Q]: the nissan primera is a automobile produced by nissan.
[A]:
nissan primera