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: Chrome Bones Classic Diamond Pet Bed, Large
Product description: Let your pampered pet lounge in sophisticated styling with this unique Italian textured snake skin patent leather bed. Complete with a very plush water resistant lining and chrome plated hardware, your prized pup with have sweet dreams for sure!.
Product feature: Italian textured snake skin patent leather, Leather backing, Plush water resistant lining, Chrome plated hardware, Dust bag packaging
Product price: $424.97
Product brand: Chrome Bones
Target attributes: Size
Answer: attribute: size
value: large
source: product title