TASK DEFINITION: Given a sentence, generate a most likely context or previous statement. The previous statement should be relevant to the given statement.
PROBLEM: He stands on his veranda, watching the boy trudge away across the compound before turning and heading back inside.

SOLUTION: The commander emerges from his hut in his vest, pushing the small boy before him.

PROBLEM: He remains staring out of the window.

SOLUTION: As the carriage leaves, someone watches its progress from a window.

PROBLEM: The bullet hits the tree, then the guard tries to bayonet someone.

SOLUTION:
As he leans against a tree, a guard comes at him.