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

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

[Q]: He tries the door at the far end
[A]: Back at his house someone ventures down a brief corridor.

[Q]: He stares wide - eyed as he crosses across to the door, steps to the window and turns a corner.
[A]:
Someone turns and approaches him slowly.