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: Morgan enjoyed long walks on the beach. Sentence2: She and her boyfriend decided to go for a long walk. Sentence3: After walking for over a mile, something happened. Sentence4: Morgan decided to propose to her boyfriend.

Her boyfriend was upset he didn't propose to her first.