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: Champion Elite Men's SmartTemp Boxer Briefs
Product feature: 58% cotton/37% polyester/5% spandex, Active fit, moisture wicking fabric, Stays in place when you move, SmarTemp comfort all day, Machine wash, S(28-30), M(32-34), L(36-38, XL(40-42), Product Dimensions: 8 x 4 x 2 inches, Shipping Weight: 13 ounces, ASIN: B01CSZGOEU, Date first listed on Amazon: March 10, 2016, Average Customer Review: 5.0 out of 5 stars 2 customer reviews
Target attributes: Silhouette
Answer: attribute: silhouette
value: boxer briefs
source: product title