Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Piquadro Organized Computer Portfolio Briefcase with One Compartment, Dark Brown, One Size
Product description: Organized computer portfolio briefcase with one compartment and u-zip front pocket
Product feature: Padded notebook compartment for 15 inch pc, Unhookable shoulder strap, 11,02/3,54/15,55
Product brand: Piquadro
Target attributes: Material
Answer: attribute: material
value: None
source: None