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: Ryan was at a park. Sentence2: And he saw a little girl holding a balloon. Sentence3: As he was leaving the park, he saw the same balloon stuck in a tree. Sentence4: He climbed the tree to retrieve the balloon.

Ryan then found the girl and gave her the balloon she lost.