TASK DEFINITION: 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.
PROBLEM: mpika district is a district of zambia in the northern province.

SOLUTION: mpika district

PROBLEM: adam lambert (born january 29, 1982 in indianapolis, indiana) is an american pop rock singer-songwriter.

SOLUTION: adam lambert

PROBLEM: nika kiladze (georgian: 29 november 1988 – 7 october 2014) was a georgian footballer.

SOLUTION:
nika kiladze