Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Hitachi DV18DSDLP4 18-Volt Cordless Lithium-Ion Hammer Drill (Tool Only, No Battery)
Product description: Built with a heavy-duty, industrial grade 2-piece motor, the DV18DSDLP4 hammer drill is able to handle just about any task like boring large holes into wood, drilling into concrete or driving lag bolts, yet its 22-position clutch allow the user to adapt to low torque applications such as hardware installation or furniture assembly.
Product feature: Industrial grade 2-piece motor with up to 814 in-lbs of torque to handle the toughest jobs, Single sleeve ratcheting 1/2" metal keyless chuck with carbide jaw inserts for maximum bit grip and convenient swap-outs, 22-position clutch with drill and hammer drill modes for properly matching the torque to the application, Aluminum gear case for maximum durability and strength, Metal belt hook keeps the tool close at hand, Bright LED light for increased visibility in enclosed work spaces, Externally accessible carbon brush for quick and easy maintenance, Lightweight at only 4.8 lbs, Recommended battery - 335791, Recommended charger - UC18YKSL, Covered by Hitachi's Lifetime Lithium Ion tool warranty
Product price: $6.71
Product brand: Hitachi
Target attributes: Power Type
Answer: attribute: power type
value: battery
source: product feature
attribute: power type
value: cordless
source: product title