Task: Story Composition
Input (English): Premise: Sam went door to door to try to sell magazines. 
 Initial Context: He knocked on one door and waited. 
 Original Ending: An old man opened the door and greeted Sam. Sam took out his flyers and began to sell to the man. The old man waved Sam off and told him to go. 
 Counterfactual Context: He knocked on one door and gave up when no one answered.
Output (English): But as he was walking away, an old man opened the door and greeted Sam. Sam took out his flyers and began to sell to the man. The old man waved Sam off and told him to go.