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: Ron was a perfectionist. Sentence2: So he carefully planned out everything he did. Sentence3: But he spent too much time planning. Sentence4: Ron spent 2 hours planning a trip to the park.

But right as he was about to leave, it started to rain.