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
generate two ways to classify the following objects: paper, pencil, eraser, ruler.
user
classification 1:
paper, pencil, eraser, ruler.
classification 2:
writing supplies: pencil, paper. 
crafting supplies: ruler, eraser.
assistant