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 scrambles up to the landing, shuts the door.

SOLUTION: He yanks his shirt out and rolls backwards down a flight of steps.

PROBLEM: Someone smiles at catching someone enjoying someone.

SOLUTION: He even smiles somewhat secretly to himself at what he sees.

PROBLEM: The men play with one another all around the pool.

SOLUTION:
Two men are seen passing around a ball in a pool while others swim around.