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

Input:
Product title: Grad 2015 34 Inch Red Mylar Balloons (4/pkg) Pkg/1
Product description: "CONGRATS GRAD!" Celebrate your Graduation Festivities with our colorful pre-packaged 2015 Graduation Mylar Balloons. No celebration is complete without balloons to decorate indoors and outs. Choose from a wide selection of designs and colors or select your own school colors. Each pre-packaged Graduation 2015 Mylar/Foil Balloon Package Contains: (1) 34in Number Two Shape Balloon (1) 34in Number Zero Shape Balloon (1) 34in One Shape Balloon (1) 34in Five Shape Balloon. Just fill with air and these self-sealing balloons are ready to be hung or attached to a centerpiece. Note: 34 Inch 2015 Mylar balloons will not float when filled with helium and should be air filled only. Balloons that pop due to over-inflation or improper filling will not be replaced or issued credit (see our return policy for complete terms and conditions).
Product feature: Number 2 (1) 34 Inch Mylar Balloon, Number 0 (1) 34 Inch Mylar Balloon, Number 1 (1) 34 Inch Mylar Balloon, Number 5 (1) 34 Inch Mylar Balloon, (4) per package pkg/1
Product brand: PMU
Target attributes: Quantity
Answer: attribute: quantity
value: 4/pkg
source: product title