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: Hasbro Men's Black of Five T-Shirt
Product description: Official licensed Hasbro magic the gathering merchandise. Mana symbols.
Product feature: 100% Cotton, Imported, Machine Wash, Hasbro magic the gathering licensed young men's short sleeve black shirt. Black skull mana symbol, Magic the gathering shirt, Product Dimensions: 12.6 x 9.8 x 0.7 inches, Shipping Weight: 4.8 ounces, ASIN: B017JJ2M6O, Item model number: HAMG006MSC3P1XX, Date first listed on Amazon: November 3, 2015, Average Customer Review: 4.3 out of 5 stars 16 customer reviews
Product brand: Hasbro
Target attributes: Pattern
Answer: attribute: pattern
value: None
source: None