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 is wake boarding behind a boat.

SOLUTION: A boat pulls a man up in the water.

PROBLEM: Another trooper, with a pistol barrel, knocks the pistol from someone's lifted hand.

SOLUTION: One trooper smacks the back of someone's head with a pistol barrel.

PROBLEM: Someone proudly eyes his smoking gun then reverses the suv.

SOLUTION:
Someone spins the wheel and fires out his window.