Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: Carlisle 1088402 Sparta Spectrum 15" x 20" x 1/2" White Cutting Board
Product description: Carlisle Sparta Spectrum White 15" X 20" X 1/2" Cutting BoardThis white Sparta cutting board is designed to promote safe food handling and help prevent cross contamination. The hygienic surface texture also prevents deep cuts and is easy to clean. NSF Approved Material: Polyethylene Color: White Rounded corners and edges for easier, safer handling Made in Mexico Dishwasher safe Length: 15" Width: 20" Height: 1/2" 126401
Product feature: NSF Approved, Material: Polyethylene, Color: White, Rounded corners and edges for easier, safer handling, Made in Mexico
Product brand: Sparta Spectrum
Target attributes: Material
Answer: attribute: material
value: polyethylene
source: product description
attribute: material
value: polyethylene
source: product feature