You will be given a definition of a task first, then some input of the task.
In this task you are given a short story and a question regarding that story. You must answer the question based on the events of the story. Try to use the same words in the story to answer each question. You should completely answer the question in a short answer. Do not include information that is unnecessary to answer the question.

Jim lost his hat at the train station. He put up posters of his hat. After a week, someone called Jim. She had found his hat on a bench. She returned it him and he bought her dinner to say thank you.
Why did She return it?
Output:
she had found his hat.