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: SoFab Coco Sofa, Beige
Product description: Sofab is a revolutionary seating product from Albany Industries. It combines great looks, comfortable seating and durability into sofas, love seats, chairs and ottomans that can be shipped UPS Ground. Some assembly required.
Product feature: 3 Year Warranty, Awesome Comfort, Perfect for tight spaces, Great Value, Made in USA
Product brand: SoFab
Target attributes: Length
Answer: attribute: length
value: None
source: None