Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: Sterling Silver Stud Earring Aprx 3 Carat Total Weight, 6mm Each Princess Invisible Cut Simulated Diamond Earring. Set on Stamping Setting with Friction Style Post
Product description: Sterling Silver Stud Earring Aprx 3 Carat Total Weight, 6mm Each Princess Invisible Cut Simulated Diamond Earring. Set on High Quality Stamping Setting with Friction Style Post
Product feature: Metal: Sterling Silver, Metal Stamp: 925, Features: Princess Invisible Cut, Back Finding: Post with Friction Back, Stone: Clear Cz, Shipping Information: View shipping rates and policies, ASIN: B00247PCAA, Item model number: 211356mm, Date first listed on Amazon: April 1, 2009, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product price: $7.45
Product brand: Inspirelista
Target attributes: Silhouette
Answer: attribute: silhouette
value: stud
source: product description
attribute: silhouette
value: stud
source: product title