Given a sentence, generate a most likely context or previous statement. The previous statement should be relevant to the given statement.

He looks back and shakes his fist while throwing several more balls.
A man is seen standing before a bowling lane and throwing a ball down the lane.

The henchman fixes a menacing glare on the camper.
He points at the mohawked camper's brightly painted van.

Skateboarders roll down the middle of public streets.

A skateboarder come rolling down a steep road.