TASK DEFINITION: Given a sentence, generate a most likely context or previous statement. The previous statement should be relevant to the given statement.
PROBLEM: Someone lowers a smile and leans forward.

SOLUTION: Someone enters the cabin and notices his colleague in her formfitting suit.

PROBLEM: From the church entrance, someone peers through a window, past the monks.

SOLUTION: Someone moves through the crowd, keeping an eye on him.

PROBLEM: The lady continues playing the instrument.

SOLUTION:
The lady plays a black piano.