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: Antigua St. Louis Blues Exceed Polo Shirt
Product description: Desert Dry Xtra-Lite moisture management micro flat pique short sleeve polo with 3 button placket, flat knit collar, open sleeves and signature square back yoke.
Product feature: polyester, 100 % polyester, Team logo embroidered on the left chest, Machine washable, line dry, no bleach, Thailand, Product Dimensions: 8.4 x 6.4 x 2.6 inches, Shipping Weight: 7.2 ounces, ASIN: B0046V69DQ, Item model number: 100208-E52193, Discontinued by manufacturer: Yes, Date first listed on Amazon: October 11, 2010, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: Antigua
Target attributes: Neckline
Answer: attribute: neckline
value: polo shirt
source: product title
attribute: neckline
value: polo with 3 button placket, flat knit collar
source: product description