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: Retro Flash Mirror Horn Rimmed Metal Temple Round Sunglasses
Product description: Vintage-inspired round P3 frame that features a horned rim, embroidered detailed metal temples and a metal bridge. A casual easy to wear style this season that combines simplicity with subtle retro details. Made with a plastic based frame, metal hinges and polycarbonate UV protected lenses.
Product feature: plastic frame, Plastic lens, non-polarized, Lens width: 47 millimeters, Lens height: 43 millimeters, Bridge: 20 millimeters, 100% Protection Against Harmful UVA/UVB Rays, UV400 - 100% Protection against harmful UVA & UVB sun rays. | USA Standard ANSI Z80.3-2001 | CE certified, Round Retro P-3 Frame, Prominent Metal Nose Bridge, 30 DAY MONEY BACK GUARANTEE AND 90 DAY LIMITED WARRANTY AGAINST MANUFACTURER DEFECTS: Our main goal is make our customers happy and provide the best shopping experience; If you are not completely satisfied with our product or your purchase please contact us, we'll be happy to help, Product Dimensions: 5 x 1 x 2 inches, Shipping Weight: 0.8 ounces ( View shipping rates and policies ), ASIN: B00X8KQJGI, California residents: Click here for Proposition 65 warning, Item model number: ZV-9650f, Date first listed on Amazon: May 1, 2013, Average Customer Review: 4.0 out of 5 stars 1 customer review
Product price: $10.99
Product brand: zeroUV
Target attributes: Silhouette
Answer: attribute: silhouette
value: round
source: product description
attribute: silhouette
value: round sunglasses
source: product title
attribute: silhouette
value: round
source: product feature