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: Plain Silver Round Kitchen Canister - with Window
Product description: Sleek, streamlined, modern kitchen storage container.
Product feature: Plain silver storage canister with lid for food storage., Quality product that looks good in any style of kitchen., Ideal for storing coffee pads. Could also store tea, coffee, beans, pulses, etc., Window feature allows for display of colorful foodstuffs., Size - 17 x 7.6cm
Product price: $14.99
Product brand: Buzz
Target attributes: Material
Answer: attribute: material
value: None
source: None