Q: 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.
Stan wears eye glasses. He hates wearing glasses. He took his glasses off and stepped on them. Stan realizes that he can not see anymore. Stan went to buy new glasses.
Why did Stan realize that he can not see?
A:
he stepped on his glasses.