Task: Story Composition
Input (English): Premise: Tony was attending his brother's wedding. 
 Initial Context: His girlfriend broke up with him and he was dateless. 
 Original Ending: Tony met an old girlfriend at the grocery store. She agreed to go with him to the wedding. Tony and his ex had a great time at the celebration. 
 Counterfactual Context: His girlfriend was his date.
Output (English): Tony met an old girlfriend at the grocery store right after the wedding. She asked how the wedding was. Tony and his ex had a nice chat.