Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: Longevity Sweetened Condensed Milk 14 Oz. (Pack of 6)
Product description: Sweetened Condensed Milk is a special blend of milk and sugar that has been dissolved using proprietary vacuum process to create a foolproof "base" for a variety of desserts. Because of the sugar already present in the milk, it requires no additional sugar., 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: $29.50
Product brand: Longevity
Target attributes: Source
Answer: attribute: source
value: None
source: None