Task: Story Composition
Input (English): Premise: Kate and her class were observing a caterpillar. 
 Initial Context: But they couldn't find him. 
 Original Ending: They turned it's habitat hoping to see it. But it was nowhere to be found. Finally another kid found the caterpillar had gone into a cocoon. 
 Counterfactual Context: He was walking slowly along a branch by the pond.
Output (English): They surrounded its habitat watching every move. But, the next day, it was nowhere to be found. Finally, another kid found the caterpillar had gone into a cocoon.