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: Acer Aspire E E5-575-52JF 15.6-Inch Laptop (Intel Core i5 6th generation, 4GB RAM ,1TB HHD, DVD+W Optical Drive, Windows 10 Home), Obsidian black
Product description: Acer Aspire E 15 E5-575-52JF - Core i5 6200U / 2.3 GHz - Win 10 Home 64-bit - 4 GB RAM - 1 TB HDD - DVD SuperMulti - 15.6" TN 1366 x 768 (HD) - HD Graphics 520 - 802.11ac, Bluetooth - obsidian black - BTS
Product feature: E5-575-52JF-FB-B
Product price: $116.64
Product brand: Acer
Target attributes: Processor Brand
Answer: attribute: processor brand
value: intel core
source: product title
attribute: processor brand
value: core i5
source: product description