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: Polo Ralph Lauren Mens Custom Fit Striped Mesh Polo Shirt
Product description: Polo Ralph Lauren mens polo shirt. 100% cotton. Machine washable. Imported.
Product feature: 100% cotton. Machine washable. Imported., Embroidered polo pony logo on left chest., Uneven vented hem., Package Dimensions: 11.9 x 8.3 x 1.5 inches, Shipping Weight: 0.32 ounces, ASIN: B00Q7OO1ZI, Date first listed on Amazon: January 17, 2015, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: Polo Ralph Lauren
Target attributes: Pattern
Answer: attribute: pattern
value: striped
source: product title