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: Black Piano - Canvas Art Print, Ready to Hang, 36 by 36-Inch, Modern Wrapped Artwork for Home Decoration
Product description: Black piano printed on canvas. Fine art gallery wrapped canvas 36x36 Inch with 1,5in thickness. Suitable for your living room or bedroom.
Product feature: Polyester, Imported, Contemporary style with trendy colors, Stretched and framed, Gallery wrapped for receipt of the item in perfect condition, Hooks already mounted on the wooden bar for easy hanging
Product brand: Begin Edition International
Target attributes: Artist
Answer: attribute: artist
value: None
source: None