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: Teenage Mutant Ninja Turtles Mens Functional Open Fly Boxer Shorts Large Multicolor
Product feature: Very high quality fabric: 100% cotton; Machine washable., You will receive 1 mens boxer shorts as pictured., Elastic waistband, fitted design and a functional open fly provide comfortable support., Package Dimensions: 8 x 5.1 x 1.7 inches, Shipping Weight: 3.2 ounces, ASIN: B00HRRPF22, Date first listed on Amazon: January 9, 2014, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: Boxer
Target attributes: Silhouette
Answer: attribute: silhouette
value: boxer shorts
source: product feature
attribute: silhouette
value: boxer shorts
source: product title
attribute: silhouette
value: boxer
source: product brand