Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Tommy Hilfiger Men's Underwear 4 Pack Cotton Classics Woven Boxers
Product description: The Tommy Hilfiger woven boxer comes in an assortment of different plaids and prints.
Product feature: 100% Cotton, Imported, Machine Wash, Tommy Hilfiger logo tag at center front waist, Functional fly, Pack contains assorted plaids, stripes and prints, Soft, comfortable cotton, Package Dimensions: 13.5 x 9.5 x 3.6 inches, Shipping Weight: 14.2 ounces, ASIN: B01CF2NBV0, Item model number: 09T3034, Date first listed on Amazon: March 23, 2016, Average Customer Review: 3.6 out of 5 stars 20 customer reviews
Target attributes: Silhouette
Answer: attribute: silhouette
value: boxer
source: product description
attribute: silhouette
value: boxers
source: product title