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: When I first moved into my house, I didn't know my neighbors. Sentence2: While mowing one day, I found a kickball in my yard. Sentence3: I felt this was the perfect opportunity to meet my neighbors. Sentence4: I grabbed the ball and went next door to return it.

They were very friendly.