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: LingMei Princess Cut Silver Plated Engagement Ring Womens Ladys Girls Trendy Jewellery US Size 10
Product feature: ASIN: B00SGS5OEA, Item model number: 421R4, Date first listed on Amazon: December 12, 2016, Average Customer Review: 5.0 out of 5 stars 1 customer review
Target attributes: Silhouette
Answer: attribute: silhouette
value: engagement
source: product title