Task: Story Composition
Input (English): Premise: Tom and Mary went on a vacation. 
 Initial Context: They got into a boat and floated down a river. 
 Original Ending: They waved at the people standing on the bank. They reached the bottom of the river. Tom and Mary had a good time. 
 New ending: They waved at the people standing on the beach. They reached the middle of the sea. Tom and Mary had a good time. 
Output (English): They got into a boat and sailed out to sea.