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: Eggnog Flavor
Product description: 1 oz bottle of Eggnog Extract. Contains alcohol, natural and artificial flavors, water, Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
Product price: $5.99
Product brand: All Star Extracts
Target attributes: Flavor
Answer: attribute: flavor
value: None
source: None