TASK DEFINITION: Given a sentence, generate a most likely context or previous statement. The previous statement should be relevant to the given statement.
PROBLEM: Smiling, he watches her head away, then sits again.

SOLUTION: With a mocking frown, she flips him off.

PROBLEM: He then stands in front of a wall pushing himself forward.

SOLUTION: He begins moving himself forward on the pole.

PROBLEM: Someone pats him on the arm and walks away.

SOLUTION:
Catching his breath, he smooths his graying hair and steps away.