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 joins someone as they look towards the distant, jagged mountains of mordor.

SOLUTION: Someone watches the young hobbit.

PROBLEM: Now, he heads down a flight of stairs.

SOLUTION: He gives someone a piercing stare and she looks away.

PROBLEM: He walks in the kitchen and presses the cotton in the straw.

SOLUTION:
Someone sits in an easy chair in a coffee lounge reading a book.