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: Dot's Homestyle Pretzels - 2 lb Bag (Pack of 3)
Product description: Dots Pretzels produces unforgettable gourmet seasoned pretzels that are ideal for a family gathering or company event., 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: $29.99
Product brand: DOTS
Target attributes: Shape
Answer: attribute: shape
value: None
source: None