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: RedFox Womens Cargo Jogger Pants
Product feature: Material: Twill Span, Active and Comfortable Pants, Cargo Jogger, Good Stretch with Front and Back Pockets, Please check the size below, Shipping Information: View shipping rates and policies, ASIN: B0100YV36K, Date first listed on Amazon: June 19, 2015, Average Customer Review: 3.8 out of 5 stars 110 customer reviews
Product price: $19.99
Product brand: Red Fox
Target attributes: Length
Answer: attribute: length
value: None
source: None