TASK DEFINITION: Given a sentence, generate a most likely context or previous statement. The previous statement should be relevant to the given statement.
PROBLEM: A man in scuba gear climbs over the side.

SOLUTION: A large boat is shown sailing through ocean water.

PROBLEM: a group of friends are standing on the field and above them the man is climbing the rock wall.

SOLUTION: Man is climbong a rock wall atached to harness.

PROBLEM: Someone picks up someone's mace.

SOLUTION:
As someone jams the barrel of his gun into the warden's neck.