Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Gloomy Bear All Over Tin Lunch Box
Product description: Gloomy Bear All Over Tin Lunch Box
Product feature: Approximate size: 202 x 174 x 97mm (8 x 7 x 4 inch), Material: Tin, Official licnesed
Product price: $15.99
Product brand: Gloomy Bear
Target attributes: Material
Answer: attribute: material
value: tin
source: product feature
attribute: material
value: tin lunch box
source: product description
attribute: material
value: tin lunch box
source: product title