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: a breed is a domesticated race or type of an animal or plant.

A: breed
****
Q: george clifton james (may 29, 1920 – april 15, 2017) was a retired american actor.

A: clifton james
****
Q: maryam mirzakhani (may 3, 1977 – july 14, 2017) was an iranian mathematician.

A:
maryam mirzakhani
****