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: Poulan Pro PB195A46LT 19.5 HP Auto Transmission Lawn Tractor, 46-Inch
Product description: Poulan Pro mowers provide the latest and greatest features at industry leading prices. "Nothing cuts like a Pro." The PB195A46LT features a 46-inch deck, 19.5HP Briggs and Stratton engine, side discharge, 20-inch rear wheels, hydrostatic transmission, manual clutch, 1.5 gallon fuel tank, 11-inch mid-back seat, cast iron front axle and 16-inch turning radius.
Product feature: 19.5HP Briggs and Stratton Engine, 46-Inch Deck, Hydrostatic Transmission, Manual Clutch, 20-Inch Turf Saver Rear Tires
Product brand: Poulan Pro
Target attributes: Type
Answer: attribute: type
value: tractor
source: product title