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: Best of Breed Sheltie Tri Summer Flowers Garden Flags
Product description: Indoor/Outdoor flags featuring the artwork of artist Tamara Burnett.
Product feature: Flag is 12" x 17", Made in USA, Vibrant Colors, Made from Polypoplyn for all-weather use, Guaranteed against fading for 3 years, These flags are made with 2 pieces of fabric sewn back to back to withstand even the most severe weather
Product price: $13.95
Product brand: Best of Breed
Target attributes: Season
Answer: attribute: season
value: summer
source: product title