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: Metra 82-7501 Speaker Plates for Select 2013 and Mazda Multi-Application Vehicles (Pair)
Product description: Speaker Plates for Select 2013 and Up Mazda Multi-Application Vehicles - Pair. Accommodates 6 to 6.75 inch speakers.
Product feature: Speaker Plates for Select 2013-Up Mazda Multi-Application vehicles, Accommodates 6 to 6.75 inch speakers, Will work front speaker locations, Color: Black
Product price: $19.42
Product brand: Metra
Target attributes: Sensitivity
Answer: attribute: sensitivity
value: None
source: None