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: Bslingerie Womens Brocade Lace Up Back Underbust Boned Corset
Product description: The item includes the corset and matching panty. Size from US size S to XL. The front part is hook and eye closure, while the back is lace up. The boning material is plastic. Corsets run smaller than other clothing. Please choose the upper size if you are not quite sure about the sizing.
Product feature: 100% Polyester, Dry clean only, Boned Corset, Size S - XXL. Size S - Waist 22 - 24 Inch, Size M - Waist 24 - 26 Inch, Size L - Waist 26 - 28 Inch, Size XL - Waist 28 - 30 Inch, Size XXL - Waist 30 - 32 Inch, Size 3XL - Waist 32-34 inch, Size 4XL - Waist 34-36 inch,, Our brand 'BSLINGERIE' has been registered in US by USPTO. It is protected by laws in US. Please do not attempt to infringe our right otherwise legal action will be taken., Trademark no.: 4692206, Package Dimensions: 12.1 x 7.9 x 1.1 inches, Shipping Weight: 4 ounces, ASIN: B0093KU58A, Date first listed on Amazon: September 12, 2012, Average Customer Review: 3.0 out of 5 stars 12 customer reviews
Product brand: Bslingerie
Target attributes: Style
Answer: attribute: style
value: corset
source: product description
attribute: style
value: corset
source: product title
attribute: style
value: corset
source: product feature