Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Brinkmann 5-Burner Delivering 60,000 BTU Total Propane Gas Grill with Stainless Steel Side Burner
Product description: Create the perfect meal with this accessory packed Brinkmann 5-Burner Gas Grill. Delivering 60,000 BTUs total on 661 square inches of cooking space, this trusted grill completes meals of any size with ease. The bottle opener, 12,000 BTUs side burner, side table, accessory hooks, and pull-out condiment rack ensure convenience while the porcelain-coated cast iron cooking grates provide durability and make clean-up a breeze. Porcelain coated cast iron cooking grates. Porcelain coated steel warming rack. Integrated ignition system
Product feature: BTUs - 50,000 / 10,000 BTU's stainless steel burners / 12,000 BTU's stainless steel side burner, Grill Features - Side Burner,Warming Rack,Wheels / Grill Grate Material - Porcelain-Coated Cast Iron, Grill Material - Painted Steel / Grill,Smoker Fuel Type - Propane, Assembled Depth (in.) - 23.50 in / Assembled Height (in.) - 48.00, Assembled Width (in.) - 54.53 in / Cooking space (sq. in.) - 661
Product brand: Brinkmann
Target attributes: Type
Answer: attribute: type
value: propane
source: product feature
attribute: type
value: btus
source: product description
attribute: type
value: gas
source: product description
attribute: type
value: propane
source: product title
attribute: type
value: btu
source: product title
attribute: type
value: btu
source: product feature
attribute: type
value: btus
source: product feature