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: BOSTITCH FN1532-1M 2-Inch 15-Gauge FN Style Angled Finish Nails, 1000 per Box
Product description: BOSTITCH FN1532-1M 2-Inch 15-Gauge FN Style Angled Finish Nails, 1000 per Box, Bostitch 15 Gauge "FN" Style Angled Finish Nail
Product feature: 2-Inch Length, Chisel Point, Coated Finish, 1000 Nails Per Box, For Use in the Bostitch N62FNK Industrial Angled Finish Nailer
Product price: $14.98
Product brand: BOSTITCH
Target attributes: Quantity
Answer: attribute: quantity
value: 1000 per box
source: product description
attribute: quantity
value: 1000 per box
source: product title
attribute: quantity
value: 1000 nails
source: product feature