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: Black Max BM903000A Gas-Powered Portable Generator 3000 WATT
Product description: The Black Max 3000 PSI Gas-Powered Pressure Washer has a large 2.5 gallon fuel tank in a lightweight hand truck frame design with quick-release handle. With 3000 running watts and 3750 starting watts, this pressure washer offers enhanced features like the 8" x 2" never flat rubber profile wheels and frequency-compensating AVR voltage regulation. Includes two 120VAC 20A outlets, one 120VAC 30A Twist and one 120VAC 30A RV.
Product feature: Large 2.5 gallon fuel tank, Lightweight hand truck frame design with quick release handle, 8 inch x 2 inch never flat rubber profile wheels, 189cc OHC engine, Frequency-compensating AVR voltage regulation
Product brand: Powerstroke
Target attributes: Type
Answer: attribute: type
value: portable
source: product title