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: Suzuki AS-37 Alto Single Harmonica
Product description: This harmonica has a one octave lower range than the Soprano Single. Play this harmonica together with a bass harmonica for a deep, vibrant low-end sound. The Alto Single contains 37 holes with a range of C through C3 in the key of C. It's solid brass reed plates hold the ultra precise phosphor bronze reed system, tuned by laser. The select hardwood body and super smooth, solid brass, ergonomic reed covers create unparalleled playing comfort. The AS-37 comes in a leather covered, wooden case that is velvet lined.
Product feature: Has a one octave lower range than the Soprano Single, Play this harmonica together with a bass harmonica for a deep, vibrant low-end sound, Contains 37 holes with a range of C through C3 in the key of C, Solid brass reed plates hold the ultra precise phosphor bronze reed system, tuned by laser, Comes in a leather covered, wooden case that is velvet lined
Product price: $115.49
Product brand: Suzuki
Target attributes: Quantity
Answer: attribute: quantity
value: None
source: None