Definition: In this task, you're given a four sentences of story written in natural language. Your job is to complete end part of the story by predicting appropriate last sentence which is coherent with the given sentences.
Input: Sentence1: Ben bought a new frame to hang a picture up on the wall. Sentence2: He grabbed his hammer and some nails and walked over to the wall. Sentence3: He began to hammer a nail into a chosen spot. Sentence4: While hammering the nail, Ben smashed his pointer finger.

Ben finished hanging the picture and then treated his injury.