Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Simulated Opal & Diamond Round Stud Earrings 14Kt White Gold & Sterling Silver
Product description: Opal Round Stud Earrings
Product feature: Solid Sterling Silver & 14Kt Solid White Gold Posts and Pushbacks, Size: 8mm Earrings, Beautiful 6mm Simulated Opals (Amazing Fire), 0.02 Ct Natural Diamonds, 14Kt Stamp!!!, Comes in jewelry box, You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition., Read the full returns policy, Go to Your Orders to start the return, Print the return shipping label, Ship it!, Package Dimensions: 2.7 x 2.4 x 0.8 inches, Shipping Weight: 2.4 ounces ( View shipping rates and policies ), ASIN: B00CLMELZK, Item model number: AQ-PUBO-UV99, Date first listed on Amazon: September 18, 2015, Average Customer Review: 4.6 out of 5 stars 21 customer reviews
Product price: $39.99
Product brand: Elizabeth Jewelry Inc
Target attributes: Silhouette
Answer: attribute: silhouette
value: stud
source: product description
attribute: silhouette
value: stud
source: product title