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: Angel Cola Unisex Three Striped Retro Vintage Specks Crew Socks - 4 Pack
Product description: Angel Cola Men's Three Striped Retro Vintage Specks Crew Socks - 4 Pack
Product feature: 90% Cotton / 8% Polyester / 2% Spandex, Imported, 90% Cotton, 8% Polyester, 2% Spandex, Shoe size 5-10, Four-pairs set of crew socks in assorted colors and patterns, Machine Wash, Made in Korea, Product Dimensions: 3.9 x 3.9 x 0.4 inches, Shipping Weight: 4.8 ounces, ASIN: B015NZBLIG, Item model number: SJSH01-ST3, Date first listed on Amazon: September 22, 2015, Average Customer Review: 5.0 out of 5 stars 1 customer review
Target attributes: Style
Answer: attribute: style
value: crew
source: product feature
attribute: style
value: crew
source: product title
attribute: style
value: crew
source: product description