Task: Story Composition
Input (English): Premise: Sam put a length of saran wrap on the toilet as a joke. 
 Initial Context: He waited until his brother went to use the bathroom. 
 Original Ending: There wa a silence and then a shout. Sam's brother burst the door open and ran after Sam. Sam escaped because he was faster than his brother. 
 Counterfactual Context: Sam didn't realize that nobody was home, so the prank went unnoticed.
Output (English): In the middle of the night there was a silence and then a shout. Sam pushed the door open and ran into the shower. Sam had forgotten all about the prank.