Task: Story Composition
Input (English): Premise: Brian wanted to bulk up and build some muscles. 
 Initial Context: But lifting weights on his own was so boring. 
 Original Ending: Then his buddy Cam agreed to work out together. The two guys chatted as they exercised. In just weeks, each boy had built big muscles! 
 New ending: His buddy Cam told him he preferred to work out with a partner. Brian obliged and they chatted as they exercised together. In just weeks, each boy had built big muscles! 
Output (English): But lifting weights on his own was so exciting.