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: Amerock BP53000FB Allison Value 1-1/4 in (32 mm) Diameter Flat Black Cabinet Knob
Product description: The Amerock BP53000FB Allison Value 1-1/4 in (32 mm) Diameter Knob is finished in Flat Black. From rustic to modern-day casual to sophisticated beauty, The Allison(TM) Value Collection offers a variety of designs, making on-trend, quality hardware affordable. Flat Black is a dark, matte Black finish that subdues the highlights of each design. Amerock offers a complete line of decorative and functional cabinet hardware, bath hardware,hook and rail and wall plates. Amerocks award-winning decorative and functional hardware solutions have built the companys reputation for chic design accessories that inspire homeowners to express their personal style. Available in a variety of finishes and styles, Amerock offers high quality designs at affordable prices. Always Creating. Always Timeless. Always Amerock.
Product feature: 1-1/4 in (32 mm) Diameter Knob, Finished in Flat Black, Intricately crafted with precise detail for lifelong beauty and durability, Includes mounting hardware: (Size(s):#8-32 x 1in Truss Head Machine Screw), Uncompromised quality at an unbeatable price, Trend-right decorative hardware solutions that coordinate across collections, High-quality designs at affordable prices, A robust, complete-home decorative hardware solution
Product brand: Amerock
Target attributes: Finish
Answer: attribute: finish
value: matte
source: product description