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: Homelegance Vernon 86” Bonded Leather Sofa, Black
Product description: With defined angles that exemplify contemporary design, the vernon collection will blend effortlessly into your modern home.Metal legs support the bonded leather seating Group, while also enhancing the look of the collection.The headrests atop each piece add function to this already unique Group.The collection is offered in Black or white all bonded leather
Product feature: Exemplifies Simple clean Lines with defined angles, Easy to clean Black bonded Leather, Adjustable headrests and Sturdy metal legs that can support up to 900 lbs., Requires assembly, Matching vernon chair and Loveseat also available to complete your seating arrangement
Product brand: Homelegance
Target attributes: Number of Pieces
Answer: attribute: number of pieces
value: None
source: None