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: Majestic San Francisco Giants Athletic Advantage MLB Synthetic Polo Shirt (Large)
Product description: Stay cool at the game or playing a round of golf in this San Francisco Giants Athletic Advantage MLB Polo Shirt by Majestic which offers moisture management for comfort. With a loose fit body made from a 5.29 oz. 100% Polyester material this MLB Polo Shirt comes in Black and features include a self-fabric collar, a 3 button placket, color contrasting color side inserts, and a left-chest embroidered Giants baseball graphic. Made from 100% Polyester Material Embroidered Left Chest Giants Graphic 3 Button Placket Machine Washable Loose Fit Body Officially Licensed Giants MLB Apparel
Product feature: Made from 100% Polyester Material, Embroidered Left Chest Team Graphic, 3 Button Placket, Machine Washable Loose Fit Body, Officially Licensed MLB Apparel
Product brand: Majestic
Target attributes: Pattern
Answer: attribute: pattern
value: None
source: None