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

Input:
Product title: Top Knobs M129 Chateau Stone Knob Brass/Antique Brass
Product description: Giallo Veneziano Granite 1 3/8" with Brass base, Finish:Brass, Stone:Giallo Veneziano Granite These artfully created stone knobs match granite and marble with either a chrome or brass base. Available in two sizes and with a number of stone types; see options to select.
Product feature: Projection: 1.25" - Diameter: 1.38", Knobs Category, Brass Finish, Classic Style
Product brand: Top Knobs
Target attributes: Finish
Answer: attribute: finish
value: None
source: None