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: Prime-Line Products E 2005 Sliding Door Wafer Type Cylinder Lock
Product description: This patio door cylinder lock is constructed from die cast and comes plated in chrome. It features a wafer type lock that fits on 1in. thick door stiles. This cylinder is used to key lock most flush mount type sets., This patio door cylinder lock is constructed from die cast and comes plated in chrome. It features a wafer type lock that fits on 1in. thick door stiles. This cylinder is used to key lock most flush mount type sets.
Product feature: For 1in. thick door stiles, Wafer type lock with two keys, Used to key lock most flush mount handle sets, Chrome face, die cast body
Product price: $4.97
Product brand: Prime-Line
Target attributes: Power Type
Answer: attribute: power type
value: None
source: None