Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Sasaki 5108526 Equinox 20-Piece Stainless Steel Flatware Set
Product description: This Sasaki Equinox 20-Piece Flatware Set is constructed of 18/0 stainless steel. The contemporary design in brightly polished, mirror finish will add elegance and style to your table setting. Dishwasher safe. 20-piece set, service for four, includes (4) each: dinner fork, salad fork dinner knife, dinner spoon and teaspoon.
Product feature: 20-piece set includes 4 each of: dinner fork, salad fork, dinner knife, dinner spoon and teaspoon, Dishwasher safe, Premium stainless steel, Contemporary style, Never needs polishing
Product price: $47.00
Product brand: Sasaki
Target attributes: Quantity
Answer: attribute: quantity
value: 20-piece
source: product description
attribute: quantity
value: 20-piece
source: product feature
attribute: quantity
value: 20-piece
source: product title