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: Bella Marie Womens Nine-9 Comfy Basic Slip On Pump Party Dress Kity Heel Shoe,Taupe,8.5
Product feature: Package Dimensions: 10.7 x 6.3 x 3.6 inches, Shipping Weight: 15.2 ounces, ASIN: B00M1O4PZO, Item model number: NINE-9, Date first listed on Amazon: July 23, 2014, Average Customer Review: 3.8 out of 5 stars 2 customer reviews
Product brand: Bella Marie
Target attributes: Silhouette
Answer: attribute: silhouette
value: pump
source: product title