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: Next Level Mens Premium Fitted Short-Sleeve Crew (3600) Kelly 3600
Product description: Fabric laundered, 4.3 oz., 100% combed ringspun cotton, 32 singles Heather Grey is 90/10 cotton/polyester Set-in 1x1 baby rib collar
Product feature: 100% combed ringspun cotton fine jersey, 4.3 oz., Fabric laundered for reduced shrinkage, 1x1 baby rib-knit set-in collar, ASIN: B01EKKEZBU, Item model number: Kelly 3600 XL, Date first listed on Amazon: October 6, 2010, Average Customer Review: 3.0 out of 5 stars 1 customer review
Product brand: Next Level
Target attributes: Sleeve Style
Answer: attribute: sleeve style
value: short-sleeve
source: product title