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: ELLEN TRACY Women's Side Zip Ankle Pant
Product feature: 50% Cotton, 46% Nylon, 4% Spandex, Imported, Dry Clean Only, The perfect shape. Featuring cotton double-ply for a flattering fit, this silk cut side zip pant is a great polished piece for casual wear, Vents at the ankle add a stylish touch, Package Dimensions: 1 x 1 x 1 inches, Shipping Weight: 1 pounds ( View shipping rates and policies ), ASIN: B018UOVL4Q, Item model number: ETMS67016, Date first listed on Amazon: February 29, 2016, Average Customer Review: 2.4 out of 5 stars 5 customer reviews
Product price: $48.95 - $57.09
Product brand: ELLEN TRACY
Target attributes: Pattern
Answer: attribute: pattern
value: None
source: None