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: Copper Hoop Earrings CE1267C03- 1 inch in diameter
Product description: Copper hoop earrings CE1267C03 * Solid copper earrings. * 1 inch in diameter. * Surgical wire studs
Product feature: Copper earrings, surgical steel studs, Top quality, USA made, ASIN: B014RV9YA4, Item model number: CE1267C03, Date first listed on Amazon: March 21, 2015, Average Customer Review: 4.3 out of 5 stars 3 customer reviews
Product brand: Copper Hoop Earrings
Target attributes: Silhouette
Answer: attribute: silhouette
value: hoop
source: product brand
attribute: silhouette
value: hoop
source: product title
attribute: silhouette
value: hoop
source: product description