Task: Story Composition
Input (English): Premise: Sam worried about the math exam he had later in the day. 
 Initial Context: He always got good grades in his other classes, but math was hard. 
 Original Ending: He dreaded taking the test and thought for sure he would fail. As the day progressed on he was such a mess. When the test came, he forgot all the important formulas due to stress. 
 New ending: He looked forward to taking the test and thought for sure he would pass. As the day progressed on he was so relaxed. When the test came, he remembered all the important formulas due to being calm. 
Output (English): He always got good grades in all his classes and math was his best subject.