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

Input:
Product title: Golden&Silver 0-9 Number Hydrogen Foil Balloons Birthday Wedding Party Decoration 15" Silver & Gold
Product description: 1 Material is aluminum film, color uniform, spherical beautiful 2 You can choose numbers you need 3 When the inflation is completed, please put the ball to pinch flat, the ball comes automatically sealing glue!
Product feature: Home decoration,perfect for bithday party ,wedding,festivals, Materia:Mylar Foil, 0-9 number ,when you order you need choose number, Please note it only float when filled with hydrogen, Easy to inflate, can be used many times
Product brand: ACEFAST INC
Target attributes: Quantity
Answer: attribute: quantity
value: None
source: None