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: Someone grabs the letter and gazes longingly then turns it over in the box.

SOLUTION: He presses his thumb against the ad and looks down at the unopened envelope from his father.

PROBLEM: The second man to introduce himself takes a turn trying to hit the targets on the wall.

SOLUTION:
The first man is then shown practicing by trying to hit targets on the wall.