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: Nunn Bush Men's Cumberland Wing Tip Oxford
Product description: The Cumberland style is a classic wingtip oxford with a quality leather upper featuring perforation details, and dual comfort features including a soft collar, suede tec linings, and a memory foam footbed. It has a rubber outsole, perfect for daily work wear., Fashion is where you find it. Nunn Bush found it surrounded in comfort, dedicated to style, and walking in the legacy of quality craftsmanship. Since 1912, Nunn Bush has been making shoes of unparalleled distinction. Today, all Nunn Bush shoes are constructed with the same quality materials, specially selected leathers, and handcrafting expertise that goes back generations. It's something you'll experience in the uncompromising fit, flexibility, and strength in all their footwear.
Product feature: 100% Leather, Imported, Rubber sole, Heel measures approximately 1", Breathable Suedtec Linings, Flexible Rubber Outsole, Dual Comfort Footbed, Open Cell Memory Foam footbed, Package Dimensions: 13.2 x 7.5 x 4.6 inches, Shipping Weight: 2.35 pounds, ASIN: B00J3XTSRQ, Item model number: Cumberland Wing Tip, Date first listed on Amazon: September 30, 2014, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 3.7 out of 5 stars 62 customer reviews
Product brand: Nunn Bush
Target attributes: Silhouette
Answer: attribute: silhouette
value: wingtip
source: product description
attribute: silhouette
value: oxford
source: product description
attribute: silhouette
value: oxford
source: product title
attribute: silhouette
value: wing tip
source: product feature
attribute: silhouette
value: wing tip
source: product title