Task: Story Composition
Input (English): Premise: Charles intended to run for mayor in his city. 
 Initial Context: His rival Ron was a bitter rival. 
 Original Ending: Ron used dirty tactics to try to discredit Charles during the election. Charles was tempted to use similar strategies, but resisted. In the end, Charles won the election and became mayor. 
 Counterfactual Context: His rival Bob was a bitter rival.
Output (English): Bob used dirty tactics to try to discredit Charles during the election. Charles was tempted to use similar strategies, but resisted. In the end, Charles won the election and became mayor.