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

He keeps the ad, and looks at it with a sober expression.
It's the attachment someone forwarded to all employees.

The people demonstrate how to do back and tricks while others watch on their sides.
A large group of people are seen standing on a mat and performing a routine with one another.

Someone plunges into the water along with the boxes of biscuits and cans of water.

Descending, it lands on the tether and overturns the raft.