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: Mizuno GPM1403 Premier Softball Glove
Product description: Premier series features full-grain leather shell. Parashock plus palm pad. Mesh inserts for lightweight playability. A polyurethane powerlock strap secures the glove on your hand. Open back design for all sized hands.
Product feature: Premier series features full-grain leather shell, Parashock palm pad, Mesh inserts for lightweight playability, A polyurethane powerlock strap secures the glove on your hand, Open back design for all sized hands
Product brand: Mizuno
Target attributes: Size
Answer: attribute: size
value: None
source: None