Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Mountainsmith Cubik Camera Case Medium - Recycled Material
Product description: Internal memory card pocket. Belt attachment loop. Wide clam style opening. 450 denier PET - 100% Recycled. Detachable Shoulder Strap and Carabinier. Weight 3.5 oz.
Product feature: Mountainsmith Cubik Camera Case - Medium - Made from Recycled Material, 450 denier PET - 100% Recycled, YKK Zippers, Bartack Reinforcements, Ext. Dimensions 5" x 3.5" x 1.75" - Int. Dimensions 4.75" x 3" x 1.25"
Product price: $8.95
Product brand: Mountainsmith
Target attributes: Material
Answer: attribute: material
value: None
source: None