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: 2(X)IST Men's Sport Sport Brief
Product description: Made from soft-flex cotton highlighted with mesh trim and binding, sport is a collection that makes sure you look and feel great in action
Product feature: 92% Cotton/8% Spandex, Machine Wash, High cut leg openings expose thighs, Full back coverage, Package Dimensions: 7.5 x 5.3 x 1.2 inches, Shipping Weight: 6.4 ounces, ASIN: B005CGX8OM, Item model number: 3103471203, Date first listed on Amazon: August 28, 2011, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 3.3 out of 5 stars 25 customer reviews
Target attributes: Silhouette
Answer: attribute: silhouette
value: brief
source: product title