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: a rearguard is a part of a military force that protects the main force from attack from the rear.

SOLUTION: rearguard

PROBLEM: the iraq national under-23 football team are a team who play association football for iraq at the under-23 level.

SOLUTION: iraq national under-23 football team

PROBLEM: higher learning is a 1995 american drama movie directed by john singleton and starring ice cube, laurence fishburne, tyra banks, jennifer connelly, kristy swanson and omar epps.

SOLUTION:
higher learning