as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
categorize the following items by their type.
output:
apple - fruit
pen - stationery
book - literature
user
apple - fruit
pen - stationery 
book - literature
assistant