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: TOYOTA 4RUNNER 03-09 SIDE MIRROR LEFT DRIVER, POWER, HEATED, FOLDING, KOOL-VUE
Product description: 4RUNNER 03-09 MIRROR LH, Power, Heated, Manual Folding, Black
Product feature: 4RUNNER 03-09 MIRROR LH, Power, Heated, Manual Folding, Black
Product price: $49.00
Product brand: Kool-Vue
Target attributes: Position
Answer: attribute: position
value: side mirror
source: product title