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: FSK Polarized Square Sunglasses for Big Face (Black Frame)
Product description: FRAME: Metal made SPRING HINGED: no LENSES: Polarized SIZE: 66mm WEIGHT: 20g ACCESSORIES:Cloth, Bag, Case
Product feature: FSK Polarized Sunglasses of 100% UV400 Protection100% UV400 protection coating, blocks 100% harmful UVA & UVB Rays., Polarized Sunglasses Polarized sunglasses reduce glare reflected off of roads, water, snow, and other horizontal surfaces. Restore true color, eliminate reflected light and scattered light and protect eyes perfectly., Specifications about FSK sunglasses: Lens width: 68mm, Lens height: 47mm, Bridge width: 19mm, Arm length: 139mm, Light weight Design Is Ideal For Usage By Motorcycle And Cycling Bicycle, Driving, Running, Fishing,Racing, Skiing and Climbing, Trekking Or Other Outdoor Activities Enthusiasts. The silicone nose pad design is suitable for longtime wearing., Package including and Warranty: Package including1* Polarised sunglasses, 1* protective hard case, 1*microfiber cleaning cloth, 1*microfiber portable pouch, 1*mini screwdriver, 2 years warranty and lifetime friendly customer service.
Product price: $19.99
Product brand: FSK
Target attributes: Silhouette
Answer: attribute: silhouette
value: square sunglasses
source: product title