Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Rockport Women's Tm75mmh Pump
Product description: This stunner is a shoo-in as your next stylish staple. Leather upper in a classic pump silhouette. Slip-on design for quick and easy on and off. Breathable textile lining and a textile-covered insole that is cushioned for all-day comfort. Retention foam helps provide full foot contact and added support. Glove-like fit with no break-in period. Features adiPRENE® by adidas® sporty technology in the heel for shock absorption. adiprene®+ by adidas® resilient forefoot cushioning provides a responsive, dynamic pushoff. Durable man-made outsole. Durable rubber outsole. Imported. Measurements: Heel Height: 3 in Weight: 9.1 oz Product measurements were taken using size 8, width M (B). Please note that measurements may vary by size., Rockport has always been one step ahead of the times, believing the perfect shoe has not yet been invented. This positive dissatisfaction compels them to constantly improve upon their footwear. Founded in 1971, they were the first company to use advanced athletic technologies in casual shoes to achieve lightweight comfort, and the first company to engineer walking comfort in dress and casual shoes.
Product feature: 100% Leather, Imported, Synthetic sole, 75 millimeter heel, Midsole plate helps provide mid foot support and stability, Molded heel helps provide impact resistance and toughness, Retention foam footbed provides full foot contact and support, Foam-backed lining provides glove-like comfort, Package Dimensions: 11.8 x 6.8 x 4.1 inches, Shipping Weight: 1.95 pounds, ASIN: B00T5L3I0O, Item model number: Total Motion Plain Pump, Date first listed on Amazon: August 11, 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: 4.0 out of 5 stars 8 customer reviews
Target attributes: Silhouette
Answer: attribute: silhouette
value: pump
source: product feature
attribute: silhouette
value: pump
source: product title
attribute: silhouette
value: pump
source: product description