Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Wet Seal Women's Button Up Plaid Shirt
Product description: Rock the latest looks with this shirt featuring a plaid printed soft knit body, front button placket, chest pockets, classic collar, 3/4 roll up sleeves, and a high-low hemline.
Product feature: Polyester Spandex, Machine Wash, Imported, Model is 5'10" and wears a size small, ASIN: B00I0NH96W, Date first listed on Amazon: January 24, 2014, Average Customer Review: 4.0 out of 5 stars 1 customer review
Target attributes: Pattern
Answer: attribute: pattern
value: plaid
source: product description
attribute: pattern
value: plaid
source: product title