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: I came into the library and took a seat. Sentence2: When I looked around, I noticed a kid. Sentence3: He was staring at me for a while. Sentence4: I became frustrated and got up from by seat.

I asked him what his problem was.