TASK DEFINITION: Given a sentence, generate a most likely context or previous statement. The previous statement should be relevant to the given statement.
PROBLEM: Someone blinks, then looks over his shoulder.

SOLUTION: Behind him, a man arrives with two blonde women, one of them in a conspicuous orange skirt.

PROBLEM: In the background, a waitress holds up a tray.

SOLUTION: They are crowded in with people.

PROBLEM: Later, at the elevators, she hurries out of the gate.

SOLUTION:
Someone skips over him and grabs her bag.