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: Renzo Fontanelli Women's Osmose Slingback Pump
Product description: Spend your night out looking fabulous thanks to the Osmose slingback pump. This slingback from Renzo Fontanelli features a gorgeous leather upper and pointed toe. Standing tall with a 3" heel, this classic dress pump goes great with skirts and dresses. Plus, a cushioned leather sole forms perfectly to your foot to give you the right amount of comfort and support to keep your night going even longer than you expected., Starting as a boot-maker in 1969, Renzo Fontanelli quickly evolved into creating classic women's footwear. In the early 1990's Mr. Fontanelli decided to launch his own line bearing his name. He incorporated as many widths as possible which today covers 4A-C. Located between Pisa and Florence, Italy, the factory produces roughly 1,200 pairs of shoes per day. Today Mr. Fontanelli's sons, Fabio and Andrea, join him in the family business.
Product feature: 100% Leather, Leather sole, Heel measures approximately 3", Package Dimensions: 12 x 8 x 4 inches, Shipping Weight: 2 pounds ( View shipping rates and policies ), ASIN: B004DI6D2O, Item model number: Osmose, Date first listed on Amazon: April 19, 2011, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 4.6 out of 5 stars 3 customer reviews
Product price: $68.00
Target attributes: Silhouette
Answer: attribute: silhouette
value: pump
source: product title
attribute: silhouette
value: pump
source: product description