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: Brand New Women's Soft Fleece Slide Slippers Available in 4 Colors
Product description: The slippers have a soft fleece upper and soft fleece footbed to give it a comfortable feel when worn. The slippers are also embroidered with a peace dove.
Product feature: Synthetic, Fleece Upper and Footbed, Indoor Slippers, Embroidered Peace Dove, Soft & Comfortable, Shipping Information: View shipping rates and policies, ASIN: B00EVXFHX2, Date first listed on Amazon: August 30, 2013, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product price: $7.95
Product brand: Sunville
Target attributes: Heel Style
Answer: attribute: heel style
value: None
source: None