Task: Story Composition
Input (English): Premise: It's been too hot for my dog to want to play outside. 
 Initial Context: He gets so hyper inside so we have to come up with games to play. 
 Original Ending: I gave him a treat yesterday and he tossed it back to me. I picked it up, and he opened his mouth slightly. I tossed it into his mouth and he threw it back, happy. 
 Counterfactual Context: He is overweight and really needs to walk.
Output (English): I gave him a ball yesterday and he tossed it back to me. I picked it up and he opened his mouth slightly. I tossed it into his mouth and he threw it back, happy.