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: London Times Women's Twinkle Mesh Sheath Dress
Product description: Smocked waist sleeveless halter neck full waist sheath dress
Product feature: 89% nylon 11% metallic, NOT APPLICABLE, Dry Clean Only, Keyhole tie back neck, Fully lined, Package Dimensions: 12.4 x 6.6 x 1.5 inches, Shipping Weight: 9.6 ounces, ASIN: B0084Y8Y3O, Item model number: LR822M, Date first listed on Amazon: October 8, 2012, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 4.0 out of 5 stars 3 customer reviews
Target attributes: Neckline
Answer: attribute: neckline
value: halter neck
source: product description