TASK DEFINITION: Given a sentence, generate a most likely context or previous statement. The previous statement should be relevant to the given statement.
PROBLEM: He keeps the ad, and looks at it with a sober expression.

SOLUTION: It's the attachment someone forwarded to all employees.

PROBLEM: Someone paces toward him and glances at the wreck.

SOLUTION: He stares off, vacantly.

PROBLEM: He takes a few of the darts off his board.

SOLUTION:
He shows the darts in the dart board.