Task: Story Composition
Input (English): Premise: The boat trailer was weak from the salt water. 
 Initial Context: One tire was flat so they were careful taking it to the launch. 
 Original Ending: They took a bend too fast on the way back with the boat. The axle missed the turn and broke in half. The trailer and boat tipped onto the road. 
 Counterfactual Context: One tire was flat so they were unable to move the boat out of the water.
Output (English): Eventually they were able to, but on the way back they took a bend too fast with the boat. The axle missed the turn and broke in half. The trailer and boat tipped onto the road.