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: Maria invited her friend Stacey over to play last Saturday. Sentence2: The two girls went for a walk down to the local park. Sentence3: At the park the girls played catch with the dog. Sentence4: While they were having fun, it started to rain.

Luckily the girls made it home quickly before it downpoured.