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: HP 15.6" Pavilion Laptop 4GB 750GB | 15-n019wm
Product description: Bring peace of mind and style to your everyday tasks. Whether you're sending an email, sharing photos, online banking or listening to music, this reliable notebook, now with a thinner, lighter design, delivers day after day.
Product feature: Screen Size: 15.6", Screen Resolution: 1366 x 768, Processor Type: AMD, Processor Model: A6-5200, Processor Speed: 2GHz
Product brand: HP
Target attributes: Processor Speed
Answer: attribute: processor speed
value: None
source: None