Task: Story Composition
Input (English): Premise: Sam wanted to get a dog. 
 Initial Context: So he was researching local pet stores to buy one. 
 Original Ending: It just so happened he logged onto Facebook to see an ad for a pound. A dog named Grump was going to be put down that day. Sam has a new best friend named Grump, you should meet him. 
 Counterfactual Context: So he went straight to the local pet store to buy one he liked.
Output (English): He went on facebook while there and seen a ad for a pound, A dog named Grump was going to be put down that day. Sam has a new best friend named Grump, you should meet him.