Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Haggar Men's Life Khaki Pattern Oxford Long-Sleeve Slim-Fit Woven Shirt
Product description: Life khaki classic plaid button down oxford long sleeve slim fit woven shirt
Product feature: 70% Cotton/30% Organic Cotton, Imported, Machine Wash, Slim-fit oxford in plaid featuring button-down collar, Shirttail hemline, Package Dimensions: 10.8 x 6 x 2.3 inches, Shipping Weight: 8.8 ounces, ASIN: B00EVLZV80, Item model number: HW00064, Date first listed on Amazon: January 10, 2014, Domestic Shipping: Item can be shipped within U.S., International Shipping: This item is not eligible for international shipping. Learn More, Average Customer Review: 3.7 out of 5 stars 53 customer reviews
Target attributes: Pattern
Answer: attribute: pattern
value: plaid
source: product description
attribute: pattern
value: plaid
source: product feature