TASK DEFINITION: Given a sentence, generate a most likely context or previous statement. The previous statement should be relevant to the given statement.
PROBLEM: The man cleans the aging ski on the snow before laying it down.

SOLUTION: The man slowly slides the tool over the ski surface.

PROBLEM: Agent someone takes out a pistol and shoots someone on the shoulder, but he escapes into the hallway and shoots another guard.

SOLUTION: As someone flees the room, he shoots an mp.

PROBLEM: Someone follows at a leisurely swagger, his sketchbook in hand.

SOLUTION:
We watch through a window as someone ushers the zookeeper into her room.