Given the task definition and input, reply with output. 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.

Sentence1: A little boy played with a ball alone. Sentence2: Someone brought a little girl into the room with him. Sentence3: She wanted to play with the ball and he was afraid to let her. Sentence4: However he allowed her to play with the ball as well.
They continued to play until they went home, not alone anymore.