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 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: We are holding the tight device.

SOLUTION: A man is shown on the front of an advertisement.

PROBLEM: Someone downs a bottle of water, then gasps in air.

SOLUTION:
People stand together at the top of the hill.