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: John Pearse P650 Bronze Acoustic Guitar Strings, Medium
Product description: Pearse Phos/Brz Bl/Grass
Product feature: Phosphor Bronze Wound, Bluegrass, .012 - .056
Product price: $12.95
Product brand: John Pearse
Target attributes: Winding
Answer: attribute: winding
value: None
source: None