Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Coopersburg Seattle Mariners Official MLB Navy Blue Baseball Bat by Sports 182557
Product description: This terrific 18" long mini baseball bat is constructed of real wood. Features team logo and colors. Finish is perfect for signatures. Innovative printing techniques provide crisp graphic on high gloss finish.A top-quality and timeless collectible to be enjoyed for years to come.A terrific gift item. Officially licensed by the Seattle Mariners and the MLB.
Product feature: Solid Wood Construction for a Classic Look and Feel., Premium quality fan gear manufactured by American-owned Coopersburg Sports. A terrific gift idea., Material: wood, Premium quality fan gear manufactured by American-owned Coopersburg Sports. A terrific gift idea., Premium quality fan gear manufactured by American-owned Coopersburg Sports. A terrific gift idea.
Product brand: Coopersburg
Target attributes: Barrel Size
Answer: attribute: barrel size
value: None
source: None