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: HARRY POTTER Platform 9 3/4 Juniors Tank Top-Black (X-Large)
Product description: Officially licensed Harry Potter juniors tank top featuring the logo for Platform 9 3/4.
Product feature: Officially licensed, Junior's Sizes, Product Dimensions: 9.5 x 7.5 x 1.2 inches, Shipping Weight: 4 ounces, ASIN: B014PZ8R4G, Date first listed on Amazon: August 31, 2015, Average Customer Review: 5.0 out of 5 stars 3 customer reviews
Product brand: Harry Potter
Target attributes: Sleeve Style
Answer: attribute: sleeve style
value: tank top
source: product description
attribute: sleeve style
value: tank top
source: product title