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: Red Wing New 3541 Men's Steel Toe Chukka Boot (11D US)
Product description: LEATHER: Gaucho Crazy Horse Leather More InformationCONSTRUCTION: Cement More InformationINSOLE: Swen-Flex More InformationLAST: 220 More InformationOUTSOLE: Rubber-EVA Xplorer - Gray More InformationCOUNTRY OF ORIGIN: Made in China More InformationCARE PRODUCTS: Leather Protector,NaturSeal SHANK: Nylon NON-MARKING: Yes DEFINED HEEL: Yes
Product feature: Leather, Electrical Hazard, Puncture Resistant, Steel Toe, SIZES: D 8-12,13,14,EE8-12,13, ASIN: B01BOL5J54, Date first listed on Amazon: February 12, 2016, Average Customer Review: 3.0 out of 5 stars 2 customer reviews
Target attributes: Shaft Height
Answer: attribute: shaft height
value: chukka
source: product title