Task: Story Composition
Input (English): Premise: Tim was very thirsty. 
 Initial Context: But the only thing in the house to drink was water. 
 Original Ending: Tim had an idea. He squeezed lemon juice into the water. He then added sugar so he could enjoy tasty lemonade. 
 Counterfactual Context: He drank some milk.
Output (English): Tim had an idea. He squeezed chocolate syrup into the milk. He then added a straw so he could enjoy tasty chocolate milk.