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: 14K Yellow Gold Round Single Cubic Zirconia Accented Heart Screwback Stud Earrings
Product description: 14K Yellow Gold Round Single Cubic Zirconia Accented Heart Screwback Stud Earrings Real Solid 14K Gold, Not Gold Plated Good For Daily Uses
Product feature: 14K Solid Gold, Package Dimensions: 4.4 x 3.9 x 0.8 inches, Shipping Weight: 0.32 ounces ( View shipping rates and policies ), ASIN: B004N78X50, Item model number: IOJ221-SC, Date first listed on Amazon: February 10, 2011, Average Customer Review: 3.0 out of 5 stars 1 customer review
Product price: $31.99
Product brand: Double Accent
Target attributes: Silhouette
Answer: attribute: silhouette
value: stud
source: product description
attribute: silhouette
value: stud
source: product title