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: Cottonique Men's Rib Drawstring Boxer Brief with Fly (Large, Melange)
Product description: You will enjoy wearing this ultimate in comfort 11 Rib Boxer Brief which is elastic free and made from totally natural cotton. Adjust your waistline comfort with the woven non-elastic drawstring.
Product feature: 100% Organic Cotton, Chemical-free, Synthetic-free, Double panel crotch with concealed stitches, Easy access fly opening, Textile Dye-free & Resin-free for sensitive skin, You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition., Read the full returns policy, Go to Your Orders to start the return, Print the return shipping label, Ship it!, Package Dimensions: 12 x 7 x 1.1 inches, Shipping Weight: 5.6 ounces ( View shipping rates and policies ), ASIN: B00FAIJP2G, Item model number: M17760, Date first listed on Amazon: September 27, 2017, Average Customer Review: 4.5 out of 5 stars 2 customer reviews
Product price: $26.75
Product brand: Cottonique
Target attributes: Pattern
Answer: attribute: pattern
value: None
source: None