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]: alaa murabit (born october 26, 1989) is a canadian physician and leading international activist for peace processes.
[EX A]: alaa murabit

[EX Q]: the genovese crime family is one of the "five families" that controls organized crime activities in new york city, within the nationwide criminal phenomenon known as the mafia (or cosa nostra).
[EX A]: genovese crime family

[EX Q]: interleukin-2 is a form of interleukin.
[EX A]:
interleukin-2