Task: Story Composition
Input (English): Premise: Tom decided to start dieting. 
 Initial Context: Although he loved eating fatty foods, he knew he shouldn't. 
 Original Ending: Tom began eating only vegetables. Soon he lost weight. Tom was happy that he was dieting. 
 Counterfactual Context: He knew he needed to eat more fruit and lean protein.
Output (English): Tom began eating onlyfruit and lean protein. Soon he lost weight. Tom was happy that he was dieting.