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: Canon GPR-36 (3782B003AA) Black Toner Cartridge for imageRUNNER Advance C2020, C2030, C2225, C2230
Product description: Canon (GPR-36) imageRUNNER Advance C2020, C2030, C2225, C2230 Black Toner Cartridge (23,000 Yield). Genuine Canon copier toner products are developed to optimize the performance of Canon copiers.
Product feature: Genuine Canon toner cartridge, black, GPR-36 / GPR36 / 3782B003, Cartridge yields up to 23K pages, Works with Canon imageRUNNER Advance C2020, C2030, C2225, C2230, Genuine Canon copier toner products are developed to optimize the performance of Canon copiers
Product price: $50.93
Product brand: Canon
Target attributes: Maximum Page Yield (Black)
Answer: attribute: maximum page yield (black)
value: 23,000 yield)
source: product description