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: Samsung PN43D430 43-Inch 720p Plasma HDTV - Black
Product description: Samsung PN43D430 43-Inch 720p Plasma HDTV
Product feature: 43-Inch Plasma Display, 720p resolution, 4.1 Energy Star rating
Product brand: Samsung
Target attributes: Sony Technology Line
Answer: attribute: sony technology line
value: None
source: None