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: Timberland Men's Earthkeepers Chelsea Boot
Product description: Rich suede features dual elastic panels for fit and a slim leather accent for sophistication., Stay crisp and casual with this Chelsea boot from Timberland. The soft suede upper feature twin goring panels at the ankle for a flexible fit as well as easy on and off. Plus, since it's from the Earthkeepers collection, you know the philosophy is spot on.
Product feature: 100% Leather, Synthetic sole, Chelsea-cut ankle boot featuring sueded leather upper with contrast goring insets and easy-one loop at back, Package Dimensions: 13.9 x 8.9 x 4.9 inches, Shipping Weight: 3.6 pounds, ASIN: B005APTWY0, Item model number: Earthkeepers Pull-On, Date first listed on Amazon: January 7, 2012, 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: 3.8 out of 5 stars 24 customer reviews
Target attributes: Boot Style
Answer: attribute: boot style
value: chelsea
source: product title
attribute: boot style
value: chelsea
source: product feature
attribute: boot style
value: chelsea
source: product description