Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: lkuy Steampunk round sunglasses for men and women retro personality double beam sunglasses
Product description: Precision Shaft lenses, each of the screws have been closed test 10000, allowing you to wear more secure, with high-grade metal materials and design fashionable and stylish, while ensuring quality moving and appropriate stress-free, non-human tissue irritation silicone nose pads, keeping it radian shape Time goes by, style forever, those elements in fashion never-ending, big outline, decorated with elegant external, classical interpretation of the eternal love of art and beauty delay, wild doctrine simple fashion, enduring simple version of type, put aside the tedious decoration and design retro style into which the refined and elegant atmosphere fashion, between fashion and function precise time smell, highlights the delicate pursuit of
Product feature: metal frame, Decorative sunglasses / sunglasses ultraviolet, polarized intensity explosion, polarizing filters, Frame Material: Metal, lens material: resin lenses, high transmittance, Anti-UVA, UVB, decorative, anti-glare, anti-glare, anti-fog, Light weight, impact resistance, waterproof, anti-oil, anti-scratch, anti-reflection, Travel must Sunglasses, 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!, Shipping Information: View shipping rates and policies, ASIN: B010CS4BWC, Date first listed on Amazon: June 25, 2015, Average Customer Review: 5.0 out of 5 stars 2 customer reviews
Product price: $24.00
Product brand: lkuy
Target attributes: Silhouette
Answer: attribute: silhouette
value: round sunglasses
source: product title