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: Brewster WPB93854 Wall Pops Tangier Blox
Product description: Tangier Blox are a culture clash between modern and classic. A lovely Moroccan inspired decal, this dedicant wall decal is hip and stylish. A geometric patern in black and white this decal will not over power the décor already in home home but resonate with it, enhanceing your walls and everything inbetween. Tangier Blox are 13" x 13".
Product feature: Totally hip wall art; create your own fashion statement, Peel and stick technology; easy to hang on any flat surface, Repositionable and removable; will not damage walls; dorm approved, Available in bright, fun, solid colors and funky design groups; the possibilities are endless, Choose from dots, blox and stripes; coordinated to mix and match
Product price: $25.68
Product brand: Wall Pops
Target attributes: Placement
Answer: attribute: placement
value: walls
source: product feature
attribute: placement
value: wall
source: product feature
attribute: placement
value: wall decal
source: product description
attribute: placement
value: walls
source: product description
attribute: placement
value: wall
source: product brand
attribute: placement
value: wall
source: product title