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

Input:
Product title: Atlantic Furniture Metro Headboard
Product description: The chic Metro headboard is a welcome addition for any modern room, with a symmetrical curvature framed with solid hardwood.
Product feature: solid hardwood construction, High-build, five-step finishes, Attaches to Metal bed Frame
Product price: $12.66
Product brand: Atlantic Furniture
Target attributes: Size
Answer: attribute: size
value: None
source: None