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: Baden Seamed Machine Baseball-9" White (Dozen)
Product description: Baden 1237269 Baden Seamed Machine Baseball-9" Wht (DZN)
Product feature: 9" White Baseball, Patented red seamed dimpled pitching machine ball, Inset seams will not come in contact with machine wheels protecting red seams from wear, Baseball appearance trains batters eye for the real pitch, Sold by the Dozen
Product price: $54.99
Product brand: Baden
Target attributes: Quantity
Answer: attribute: quantity
value: None
source: None