Task: Story Composition
Input (English): Premise: Mr Ben required anyone passing a note to read the note to the class. 
 Initial Context: Sarah was passing a note to Tom. 
 Original Ending: But she was caught. Sarah got in front of the class and read the note. Mr Ben's surprise party was ruined. 
 Counterfactual Context: Tom was passing a note to Sarah.
Output (English): But he got caught. Tom got in front of the class and read the note. Mr Ben's surprise party was ruined.