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: Protect Me Alert Series Dog Sock
Product description: Unique character Dog sock with grip enforced at the bottom to prevent sliding on slippery surfaces. Put a stop to your Dogs paws slipping while sitting! Anti-slip socks for your dog! No more sliding on floors and risk of injury. Protect your floors, protect his/her paws.
Product feature: 80% cotton, 15% polyester, 5% spandex elastic, Non-skid feature allowing for more grip
Product brand: Protect Me Alert Series
Target attributes: Special Use
Answer: attribute: special use
value: None
source: None