Task: Story Composition
Input (English): Premise: Tom's wrists had been hurting recently. 
 Initial Context: It was due to his poor keyboard ergonomics at work. 
 Original Ending: Tom ordered a brand new mechanical keyboard online. It came in the mail the next day. Tom's wrists no longer hurt with his more ergonomic keyboard. 
 New ending: Tom ordered a brand new mouse online. It came in the mail the next day. Tom's wrists no longer hurt with his more ergonomic mouse. 
Output (English): It was due to his cheap mouse at work.