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: Bob bought an old notebook at a garage sale. Sentence2: He opened it at home to jot down a note. Sentence3: In the notebook was a lot of notes from the old owner. Sentence4: Bob spent an hour reading through all the old notes.

When he was done he forgot what he wanted to write down.