Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: Bornd 2.4GHz 800/1600 DPI Laser Wireless White (A50 WHITE)
Product description: Bornd A50 2.4GHz 800 / 1600 DPI Laser Wireless Air Mouse (White)
Product feature: Operation Range: 30-Feet, Resolutions: 800 / 1600 DPI, Buttons: 8, Compatibility: Windows 98/ 2000/ XP/ ME/ VISTA/ Win7/ Mac OS, Taking the lead in 3D gyro technology 360 degrees, 79 channels in hopping, with 2 group from 2.400GHz-2.4853GHz
Product brand: Bornd
Target attributes: Sensor
Answer: attribute: sensor
value: laser
source: product title
attribute: sensor
value: laser
source: product description