Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: CHARLES DAVID Women's Ala
Product description: The core line of the company brand, Charles David is for the woman who lusts after the most stylish, sophisticated footwear with European influences and craftsmanship. Made with high quality leathers, soft satins and precious jewel details, this line is favored by loyal customers and celebrities around the world. Each season the ultra-feminine, fashion-forward styles are available in both Charles David retail stores and select department and specialty stores nationwide., The core line of the company brand, Charles David is for the woman who lusts after the most stylish, sophisticated footwear with European influences and craftsmanship. Made with high quality leathers, soft satins and precious jewel details, this line is favored by loyal customers and celebrities around the world. Each season the ultra-feminine, fashion-forward styles are available in both Charles David retail stores and select department and specialty stores nationwide.
Product feature: 100% Stretch fabric, Synthetic sole, Heel measures approximately 2 3/4", Platform measures approximately 1", Package Dimensions: 11.5 x 6.1 x 4 inches, Shipping Weight: 1.3 pounds, ASIN: B003XTU2J4, Item model number: Ala, Date first listed on Amazon: December 13, 2010, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 3.0 out of 5 stars 1 customer review
Product brand: Charles David
Target attributes: Silhouette
Answer: attribute: silhouette
value: None
source: None