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: Vans Toddler Classic Slip-On, Flame Black/Red-8.5 Toddler
Product description: Vans Kids Classic Slip-On (Infant/Toddler)
Product feature: Shipping Information: View shipping rates and policies, ASIN: B005CDSDBI, Date first listed on Amazon: April 5, 2012, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product price: $29.97
Product brand: Vans
Target attributes: Style
Answer: attribute: style
value: vans
source: product title
attribute: style
value: vans
source: product description
attribute: style
value: vans
source: product brand