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: Lou's mom made his lunch everyday. Sentence2: He hated the peanut butter sandwiches she would make. Sentence3: Lou left a sandwich in his bag and forgot about it. Sentence4: Two days later Lou noticed ants in his closet.

He traced them back to the sandwich he forgot about.