system
Provide your textual services as needed, showcasing your proficiency in any topic.
human
Identify and replace the unclear pronouns in this text.
'Mark went to the store to buy milk, eggs, and bread. He forgot his wallet at home, so he went back to get it before returning to the store.'
gpt
Mark went to the store to buy milk, eggs, and bread. Mark forgot his wallet at home, so he went back to get it before returning to the store.