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: Chef Knife Professional 8 Inch - Ultra Sharp Japanese Design Cooking Knife with German Stainless Steel - Ideal as Kitchen Knives Chopping Dicing Slicing Sushi Fruits Vegetables Meat or Chefs Cutting
Product description: NBCT Hair Fibers act as hair thickener increasing volume dramatically. When you use NBCT Hair Fibers on the thinning area of your hair, the fibers automatically cling to your hair like millions of tiny magnets instantly making each strand of hair thicker and fuller. Once the fibers adhere to your hair they stay in place until the next washing. Feel more confident with NBCT Hair Fibers!
Product feature: ?? Hair fibers act as a thickener that increase volume dramatically., ?? Applicator bottle makes it very easy to apply., ?? Clean Pillow Formula, ?? Works for both men & women, ?? Easy to clean with any shampoo! Resistant to wind and rain.
Product brand: NBCT
Target attributes: Special Occasion
Answer: attribute: special occasion
value: None
source: None