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: Lucky Brand Men's Mammoth Plaid-Western Shirt
Product feature: 100% Cotton, Machine Wash, Snap Front Closure, Point collar, Package Dimensions: 1 x 1 x 1 inches, Shipping Weight: 1 pounds, ASIN: B00F0EJAX4, Item model number: 7M41276, Date first listed on Amazon: December 11, 2013, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 5.0 out of 5 stars 2 customer reviews
Target attributes: Pattern
Answer: attribute: pattern
value: plaid
source: product title