Task: Story Composition
Input (English): Premise: I was meeting my brother to pick up my mom for a visit. 
 Initial Context: We decided to meet in a town about halfway between us. 
 Original Ending: He thought it was one exit off the highway. I thought it was a different exit. We ended up driving right past each other on I-95. 
 Counterfactual Context: We decided to have me pick him up first.
Output (English): He thought it was the wrong exit off the highway. It was a different exit. He ended up driving right past it on I-95.