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: Genuine Boys' 2 Pack Polo Shirt (More Styles Available)
Product description: For over 50 years, has been a leader in providing quality childrens clothing at an outstanding value.
Product feature: 60% Cotton, 40% Polyester, Imported, Machine Wash, Easy care fabric, Package Dimensions: 1 x 1 x 1 inches, Shipping Weight: 1 pounds ( View shipping rates and policies ), ASIN: B00KRJS9SY, Item model number: T5PL86, Date first listed on Amazon: July 31, 2014, Average Customer Review: 3.4 out of 5 stars 60 customer reviews
Product price: $12.50 - $17.00
Product brand: Genuine
Target attributes: Neckline
Answer: attribute: neckline
value: polo shirt
source: product title