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: Pelle Moda Women's Ilan2-St Dress Pump
Product description: Two piece pump with oversized crystal ornament on the toe, pleated upper detail
Product feature: 100% Textile, Imported, Synthetic sole, Heel measures approximately 3", Beautiful pump with oranament, Shipping Weight: 7 ounces ( View shipping rates and policies ), ASIN: B01HOQE1SY, Item model number: Ilan2-st, Date first listed on Amazon: September 14, 2016, 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: 5.0 out of 5 stars 1 customer review
Product price: $46.49 - $155.00
Product brand: Pelle Moda
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