Task: Story Composition
Input (English): Premise: Keith took very little care of his teeth. 
 Initial Context: He didn't brush his teeth for months and months. 
 Original Ending: His bottom row of teeth become completely black. He decided it was time to start brushing. He brushed his teeth and set up an appointment with a dentist. 
 Counterfactual Context: He had abnormally healthy teeth.
Output (English): However, his bottom teeth started to get discolored. He decided it was time to start brushing. He brushed his teeth and set up an appointment with a dentist.