Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Childhood memories 3D Pop- up Greeting Card By Chinese Paper-Cut Art 10x15cm
Product description: 3D Greeting Cards All Are From the Original Designs From Real Life,Wedding, Baby shower, Bitherday, Holiday, Celebration.Carefully designed to give you a very real feelings. Dimensions 10X15CM
Product feature: 10X15CM, Hand-made paper cut art, Original Designs From Real Life, Come with envelop, Childhood memories
Product brand: Hakam Gift Shop
Target attributes: Quantity
Answer: attribute: quantity
value: None
source: None