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: The Wilsons got together every year to decorate the Christmas tree. Sentence2: This year, Pa Wilson bought a huge 9 foot tree. Sentence3: He and his sons tied the tree to the top of the car. Sentence4: The front door of their house was smaller than they realized.

Pa Wilson and his sons struggled to get the tree in the house.