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: vehari district is a district in the punjab province of pakistan.

SOLUTION: vehari district

PROBLEM: abraxas grossulariata is a moth of the family geometridae.

SOLUTION: abraxas grossulariata

PROBLEM: the common crane ("grus grus"), also known as the eurasian crane, is a bird of the family gruidae, the cranes.

SOLUTION:
common crane