Task: Story Composition
Input (English): Premise: Shane joined the orchestra. 
 Initial Context: He needed an instrument. 
 Original Ending: He decided on a viola. His mom took him to a shop and he picked one. Then, they bought it. 
 Counterfactual Context: He brought his cello to rehearsal.
Output (English): The rehearsal went very well and everyone was happy. His mom was watching and was very proud. Them, they went home and celebrated.