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]: the moirai(the fates) were the three goddesses of destiny in greek mythology.
[EX A]: moirai

[EX Q]: the bighorn sheep ("ovis canadensis") is a species of sheep.
[EX A]: bighorn sheep

[EX Q]: laura bell bundy (born april 10, 1981) is an american actress and singer.
[EX A]:
laura bell bundy