Task: Story Composition
Input (English): Premise: Timothy wanted his dad to build him a tree house. 
 Initial Context: So they found the biggest tree and started working. 
 Original Ending: It took days but they finally finished it. Timothy climbed up the ladder with pure excitement. He missed a step and fell to the ground breaking his arm in two. 
 New ending: It took days but he finally convinced him. When it was done, Timothy climbed up the ladder with pure excitement. He missed a step and fell to the ground breaking his arm in two. 
Output (English): His dad said was dangerous and refused.