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: Smartdog 4oz Real Chicken Breast Jerky
Product description: A favorite choice for many owners as chicken is naturally easy to digest, high in protein and low in fat. Smartdog only uses the breast meat, which is the leanest and highest quality of the chicken. The breast meat is then generously carved into strips for a perfect snack portion. Smartdog Jerky meat is sourced and made in the USA. The package also features a convenient zip lock pouch to lock in freshness.
Product feature: No Artificial Colors of Flavors, No Meat By-Products, No Preservatives or Filler, USDA Certified Human Grade Quality, Ingredients: chicken breast, water, sea salt (less than 1%)
Product brand: Smartdog Jerky
Target attributes: Type
Answer: attribute: type
value: jerky
source: product brand
attribute: type
value: strips
source: product description
attribute: type
value: jerky
source: product description
attribute: type
value: jerky
source: product title