Task: Story Composition
Input (English): Premise: Sam bought some expensive clothes. 
 Initial Context: He bought a fifty dollar shirt. 
 Original Ending: He bought sixty dollar jeans. He then saw a homeless man with no shirt. He decided to donate the clothes to the homeless man. 
 Counterfactual Context: He soon regretted it and returned the clothes.
Output (English): He bought cheap jeans instead. He then saw a homeless man with no shirt. He decided to donate the clothes to the homeless man.