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: Sterling Silver Frog Band Ring
Product description: Ring sizes may not be exact and can vary up to 1/2 size. May contain nickel.
Product feature: Package Dimensions: 6 x 5.5 x 0.8 inches, Shipping Weight: 0.16 ounces, ASIN: B00964ILDY, Date first listed on Amazon: September 5, 2012, Average Customer Review: 4.0 out of 5 stars 1 customer review
Product brand: 100Silver
Target attributes: Silhouette
Answer: attribute: silhouette
value: band
source: product title