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: Fruit of the Loom Boys' Boxer Brief (Pack of 7)
Product description: Fruit of the loom boys' stripe boxer briefs are tag free and provide a comfortable fit with legs that don't ride up for all day comfort. This seven pack has you covered for every day of the week with bold stripes and a black waistband that is soft against the skin.
Product feature: 75% Cotton, 25% Polyester, Imported, Pull On closure, Machine Wash, Legs don't ride up, Soft touch waistband, Tag free, Colors will vary, Package Dimensions: 1 x 1 x 1 inches, Shipping Weight: 1 pounds, ASIN: B016KURGSW, Item model number: 7EL467B, Date first listed on Amazon: February 20, 2016, Average Customer Review: 2.0 out of 5 stars 1 customer review
Target attributes: Silhouette
Answer: attribute: silhouette
value: boxer briefs
source: product description
attribute: silhouette
value: boxer brief
source: product title