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]: lionel scaloni (born 16 may 1978) is an argentine football player.
[EX A]: lionel scaloni

[EX Q]: rakesh sharma (born 13 january 1949) is a retired squadron leader in the indian air force.
[EX A]: rakesh sharma

[EX Q]: kaya is a city in burkina faso.
[EX A]:
kaya