Task: Story Composition
Input (English): Premise: I worked at the MBTA for 26 years. 
 Initial Context: I took new employees on field trips. 
 Original Ending: My last trip was in 2007. I took a new buyer to visit a repair facility in Newton. I gave a brief history of the MBTA. 
 Counterfactual Context: I've never tried taking new employees on a field trip.
Output (English): One time I imagined what it would have been like. I saw myself taking new byers to visit repair facilities in Newton. I would give brief histories of the MBTA.