Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: 6 Inch Jumbo Odor Free Bully Sticks - 25 Pack
Product description: Should be used for the most aggressive of chewers. 30-50% bigger than our typical 6 inch thick bully sticks. These are the biggest of the big 6" odor free bully sticks. They are very rare and only happen to come in a few times a year.... we have very limited quantities of these so they will be taken off the site as we sell out. These are about 30-50% bigger than our typical 6" thick bully sticks and should be used for the most aggressive of chewers. We use exclusively free-range grass fed cattle in our Best Bully Sticks natural beef dog treats and dog chews. We believe that cattle should be free range and graze on grass rather than be cooped up in feedlots. In our opinion, this makes for a higher quality product the way that nature intended. These are our all natural odor free bully sticks.
Product feature: All Natural, Odor Free, 30-50% bigger than our typical 6 inch thick bully sticks, Should be used for the most aggressive of chewers
Product brand: Best Bully Sticks
Target attributes: Chew Type
Answer: attribute: chew type
value: bully sticks
source: product description
attribute: chew type
value: bully sticks
source: product feature
attribute: chew type
value: bully sticks
source: product title
attribute: chew type
value: bully sticks
source: product brand