Task: Story Composition
Input (English): Premise: Brian was having frequent backaches. 
 Initial Context: He was visiting his doctor often. 
 Original Ending: His doctor suggested that he buy a new mattress. Brian took his advice and purchased a sleep number mattress. He hasn't had a backache since his new purchase. 
 Counterfactual Context: He didn't want to visit the doctor though.
Output (English): His friend suggested that he buy a new mattress. Brian took his advice and purchased a sleep number mattress. He hasn't had a backache since his new purchase.