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: Gumball Poodle Bookworm Knee High Socks One Size
Product description: These fun knee socks that read Bookworm in yellow letters on blue socks make a great novelty gift or a way to let everyone know you love reading and are proud of it! The design is woven in, not screen printed. These quality socks from Gumball Poodle recall the tube socks of old but include a cushioned foot and heel for maximum comfort. Made with a blend of 75% cotton, 17% polyester, 5% spandex, 3% rubber. Machine wash cold and hang to dry.
Product feature: So what if your nose is stuck in a book, from twilight to breaking of dawn, lost in that neverending story -- youre smarter than everyone else and not afraid to show it., Show off your smarts with a pair of these blue with yellow lettering and trim BOOKWORM knee highs and watch as your educated feet book it straight to the top!, One Size Fits Most From a Womens Size 6 Shoe to a Mens Size 12.5 Shoe., Yellow letters on blue socks, 75% Cotton, 17% Polyester, 5% Spandex, 3% Rubber., Package Dimensions: 7.3 x 3.6 x 1.6 inches, Shipping Weight: 3.2 ounces ( View shipping rates and policies ), ASIN: B00G1RKUN8, Date first listed on Amazon: October 20, 2013, Average Customer Review: 4.3 out of 5 stars 9 customer reviews
Product price: $13.65
Product brand: Gumball Poodle
Target attributes: Style
Answer: attribute: style
value: knee high
source: product title
attribute: style
value: knee
source: product description
attribute: style
value: knee highs
source: product feature