TASK DEFINITION: Given a sentence, generate a most likely context or previous statement. The previous statement should be relevant to the given statement.
PROBLEM: She takes a puff of a cigarette.

SOLUTION: He and someone share a smile, then look away.

PROBLEM: We and the man lifts a weight.

SOLUTION: The man drops the weight to the ground.

PROBLEM: Someone runs, followed by his group, as a man runs up to him.

SOLUTION:
It collides with a car.