Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Border Grill, Organic Black Beans, 16 oz
Product description: Organic black beans cooked with a touch of butter., Microwave for 3-5 minutes or until heated thoroughly., 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 brand: Border Grill
Target attributes: Preparation
Answer: attribute: preparation
value: None
source: None