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: the scrotum is the bag that holds the testicles (commonly called "balls") in male mammals.

SOLUTION: scrotum

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

SOLUTION: abraxas grossulariata

PROBLEM: octavia spencer was born in montgomery, alabama.

SOLUTION:
octavia spencer