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: Flash Furniture Prestige Series Fedexable Microfiber Sofa, Chocolate Brown
Product description: This comfortable, well-made sofa is sure to provide you with years of great seating. The tight back design offers firm support for those with back problems. The streamline design will give your home a clean appearance whether this is your main source of seating or used for lounging. This sofa is perfect for getting furniture between narrow openings due to the fact that the furniture is shipped unassembled in a FedEx carton. [Y-H901-3-CHOC-BN-GG].
Product feature: Category: Living Room Furniture^ Upholstered Sofas/Sectionals/Armchairs, Decorative and elegant home furnishing with a blend of luxury and comfort, Manufactured in China
Product brand: Flash Furniture
Target attributes: Number of Pieces
Answer: attribute: number of pieces
value: None
source: None