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: Bear Hearts - Valentines Day - Standard Size Decorative Flag 28 X 40 Inches
Product description: What an adorable Valentine's Day house flag.. perfect for the holiday! Too charming not to have for Valentine's Day... but great for the rest of the year as well! Measures 28"x40" to slide easily onto any standard house flag hardware via a pocket across the top. Printed in the USA on durable 300 denier polyester, for long lasting vibrant display season after season. Text correctly readable on one side of this charmer of a holiday house flag. Brand new in our inventory and sure to be a hot seller.... Better grab this charming bear Valentine's Day house flag now!
Product feature: 28" x 40", Polyester
Product brand: Custom Decor
Target attributes: Flag Type
Answer: attribute: flag type
value: house flag
source: product description