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

Input:
Product title: Adjustable No! Slip Martingale Collar, 3/8"
Product description: Our No! Slip Martingale Adjustable Dog Collar is excellent for dogs that easily slip a regular collar. The unique limited closure prevents the collar from becoming too tight.
Product feature: Limited closure nylon training collar, Available in four sizes, Quality Guaranteed, Wide width, Our no-slip martingale dog collar is adjustable for a perfect fit
Product brand: Coastal
Target attributes: Collar Type
Answer: attribute: collar type
value: martingale
source: product feature
attribute: collar type
value: martingale
source: product title
attribute: collar type
value: limited closure
source: product description
attribute: collar type
value: martingale
source: product description