Task: Story Composition
Input (English): Premise: Tyler was always overweight. 
 Initial Context: He loved to cook, so he learned to cook healthy food. 
 Original Ending: He started tracking what he ate on an app on his phone. He took walks around his neighborhood. Within a few months, he had lost 40 pounds. 
 New ending: He started tracking what he ate on an app on his phone. He took walks around his neighborhood. After a few months, he had lost no weight so he went to see a doctor. 
Output (English): He had a thyroid condition that made it impossible to lose weight.