Task: Story Composition
Input (English): Premise: Bill was an astronaut. 
 Initial Context: He went to space on a rocket. 
 Original Ending: As he floated around, he saw that the radio was broken. He had to fix it quickly so he could communicate. He fixed it in 1 hour and could communicate with NASA. 
 Counterfactual Context: He went on a mission to Mars.
Output (English): As he was preparing to return, he saw that the radio was broken. He had to fix it quickly so he could communicate. He fixed it in 1 hour and could communicate with NASA.