Task: Story Composition
Input (English): Premise: Julian rode his rusty bike down the street. 
 Initial Context: As he was riding, his chain fell off and he couldn't ride anymore. 
 Original Ending: He walked the bike home to his dad. His dad decided that Julian needed a new bike. They went to the store, and Julian chose a new mountain bike. 
 New ending: He walked in pain home to his dad. His dad decided that Julian needed his arm to be taken a look at. They went to the doctors, and Julian got a cast for his arm. 
Output (English): As he was riding he fell off the bike.