Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: NFL Flag Team: Dallas Cowboys 28 inches by 40 inches
Product description: Designed to hang vertically from an outdoor pole or inside as wall decor. This flag is constructed with durable polyester and features vibrant colors and exciting graphics. Machine Washable. Poles and hardware not included. 28 inches by 40 inches. Made by Wincraft.
Product feature: Officially licensed by the NFL, Officially licensed by the Dallas Cowboys, Top-Quality, manufactured by Wincraft
Product price: $23.22
Product brand: WinCraft
Target attributes: Season
Answer: attribute: season
value: None
source: None