Task: Story Composition
Input (English): Premise: The bulldozer had done a great job. 
 Initial Context: It had smashed through the soil and sediment with no problem. 
 Original Ending: His crew began slowly moving away the larger chunks of rock. They were mindful to look for any bits of large bone. What they found surprised them. 
 Counterfactual Context: It had smashed through the building with no problem.
Output (English): His crew began slowly moving away bricks. They were mindful to look for anything of value left behind. What they found surprised them.