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: Qualatex 11" Metallic Silver Latex Balloons (10ct)
Product description: Our Metallic Silver Latex Balloons are a quick and easy way to add a festive look to your event decorations. These 11" metallic silver latex balloons come uninflated. Use alone or combine with other foil or latex balloons for a custom balloon arrangement! These balloons ship uninflated and can be filled with air or helium. Ribbon not included. Measures 11". 10 per package.
Product feature: 10 Balloons per package
Product price: $8.99
Product brand: Qualatex
Target attributes: Quantity
Answer: attribute: quantity
value: 10 balloons
source: product feature
attribute: quantity
value: 10ct
source: product title