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 player from the green team begins running with his stick alongside his opponent to go towards the ball.

SOLUTION: There are two teams represented by the color green and color white playing lacrosse against each other in an outdoor field.

PROBLEM: Only to retreat as colossal spiders appear scrambling over the rubble.

SOLUTION: The giant's weapon, strikes the bell.

PROBLEM: She pushes her chair out and strides away.

SOLUTION:
He shoots her an alarmed look.