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: Personalized Cocktail, Beverage or Dessert Napkins - Double Hearts 1 (125)
Product description: Square 5" (folded) 3-ply napkins with 1" ribbed edges on 2 sides. These will be printed with a double hearts image as shown and 2 lines of text underneath. If you would like more design control over your napkin, please see our Amazon store items by clicking on the 'Favor Supply Store' tag. Note: personalized items are not returnable, please be sure to carefully proof read the text, and carefully choose your napkin color and imprint color. If you would like a sample napkin in a certain napkin/imprint color mailed to you please email us (imprint will be chosen from a job currently in process).
Product feature: Add 2 lines of text under image of double hearts., Choose from a variety of napkin colors and foil imprint colors, 5" square 3-ply beverage or dessert size napkin
Product brand: Favor Supply Store
Target attributes: Ply
Answer: attribute: ply
value: 3-ply
source: product description
attribute: ply
value: 3-ply
source: product feature