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: Maple Valley Organic Maple Syrup Grade A Dark Robust (formerly grade B), 3 Gallon Bag in Box
Product feature: 3 gallons of syrup, Long-lasting, shelf-stable box, Airtight inner bag needs no refrigeration, Easy to use "no-spill" spout, 100% recyclable packaging, Our products contain only one ingredient: pure, organic, maple syrup, This minimally processed super-food fits in to most dietary guidelines and restrictions, All of our farmers practice the highest standards in collecting and processing sap in order to ensure the best quality product reaches your table, Changes established by the USDA in 2015, according to syrup color and taste, Maple Valley's former Grade A Amber products are now being labeled Grade A Amber & Rich, Maple Valley's former Grade B products are now being labeled Grade A Dark & Robust, Our trees produce for over 200 years while sequestering over 100 lb of CO2 for each gallon of syrup produced!, Our office & bottling facility is 100% carbon neutral through a partnership with our community wind project., We lower our carbon footprint with distributors, retailers, and vendors., We aim to be a leaders in the organic industry when it comes to environmental, economic, & social causes., 138% Manganese, 106% Vitamin B2, 15% Zinc, 10% Calcium, 6% Vitamin B1, 6% Magnesium, 5% Potassium, 1% Iron
Product price: $229.95
Product brand: Maple Valley
Target attributes: Sweetener Type
Answer: attribute: sweetener type
value: None
source: None