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: Harley-Davidson Mens Grey/Black Canvas C4 Billfold Wallet CC8187S-GRYBLK
Product description: Harley-Davidson Mens Grey Canvas C4 Billfold Wallet CC8187S-GRYBLK. This wallet is made from 100% cotton, with genuine leather trim. Wallet also features a leather interior. A great addition to any Harley riders collection. CC8187S-GRYBLK
Product feature: Cotton/Leather, Imprinted Harley-Davidson logo inside the wallet on the right side, Leather interior, 100% cotton exterior with leather and rubber trim, Measures: 4 1/2 x 4 3/8, Shipping Weight: 8 ounces, ASIN: B00GZ0PZ6S, Item model number: CC8187S-GRYBLK, Date first listed on Amazon: November 28, 2013, Average Customer Review: 4.5 out of 5 stars 5 customer reviews
Product brand: Harley-Davidson
Target attributes: Type
Answer: attribute: type
value: wallet
source: product feature
attribute: type
value: wallet
source: product title
attribute: type
value: wallet
source: product description