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: Atlas Homewares 3117 1-1/2-Inch Black and White Pyramid Knob, Black & White
Product description: Finish: Black & White, Check It Out Pyramid Knob, Accessorize with our charming Check it Out collection.
Product feature: For Knobs and Pull in this Finish and Collection See Items 3118 & 3119, Width: 1.75-Inch, Projection: 1.75-Inch
Product brand: Atlas Homewares
Target attributes: Type
Answer: attribute: type
value: knob
source: product title
attribute: type
value: knobs
source: product feature
attribute: type
value: knob
source: product description