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: Emporio Armani 4029 506580 Blue 4029 Aviator Sunglasses Lens Category 3
Product description: Sunglasses Emporio Armani EA 4029 506580 BLUE RUBBER
Product feature: Authentic new, Package Dimensions: 5.1 x 5.1 x 4.9 inches, Shipping Weight: 4 ounces, ASIN: B00HVVJKPW, Item model number: 0EA4029, Date first listed on Amazon: January 22, 2014, Average Customer Review: 5.0 out of 5 stars 1 customer review
Target attributes: Silhouette
Answer: attribute: silhouette
value: aviator
source: product title