Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Arnette Biscuit AN4208-01 Polarized Rectangular Sunglasses
Product description: Arnettes mission is creating stylish sunglasses, RX (prescription) eyewear, Snow and MX goggles, fusing exceptional design with bold attitude. Arnette sunglasses and eyewear are worn by some of the best action sports athletes and influencers from the surf, skate, snow, wake and BMX communities. The Biscuit might sound innocent and sweet but its edgy hot rod styling is anything but. It features a classic rectangle shape and beveled detailing. Frame Material: Grilamid., In 1992, Arnette was founded on the principle that doing things your own way is not only the right way, it's the only way. Created in the humble surroundings of a one-car garage in Orange County, California, Arnette has since gone on to establish itself as a leader in the youth-inspired, lifestyle eyewear market. Arnette is backed by some of the best action sports athletes and influencers from the Surf, Skate, Snow, Wake and BMX communities. With the mission of creating stylish eyewear, Arnette fuses exceptional design with bold attitude. See the world through Arnette's eyes.
Product feature: Imported, Plastic frame, Plastic lens, Polarized, 100% UV Protection coating, Lens width: 57 millimeters, Bridge: 16 millimeters, Arm: 140 millimeters, Case Included, Lenses are prescription ready (Rx-able), Package Dimensions: 7.1 x 3.7 x 2.9 inches, Shipping Weight: 4.8 ounces, ASIN: B00TF8CH7W, Item model number: Biscuit, Date first listed on Amazon: March 4, 2015, Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 3.6 out of 5 stars 13 customer reviews
Product brand: Arnette
Target attributes: Silhouette
Answer: attribute: silhouette
value: rectangular sunglasses
source: product title
attribute: silhouette
value: rectangle shape
source: product description