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: Suisse Sport Trekker Mummy 40 Degree Sleeping Bag, Multicolor
Product description: Soft, breathable liner. Full-length zipper with insulated draft protection. Double sliders offer versatile venting options. Drawstring stuff sack for easy transport & storage
Product feature: Soft, breathable liner, 60 inch zipper with insulated draft tube and antisnag, Zippered chest pocket, Full draft collar and contoured hood, Machine washable for easy Care
Product brand: Suisse Sport
Target attributes: Shape
Answer: attribute: shape
value: hood
source: product feature
attribute: shape
value: mummy
source: product title