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: E-Z Ink (TM) Compatible Toner Cartridge Replacement For Brother TN331BK TN331C TN331M TN331Y (1 Black, 1 Cyan, 1 Magenta, 1 Yellow) 4 Pack
Product description: Specifications Product Name: Brother TN331 Compatible Toner Cartridges. Page Yield: Black is 2,500 pager per toner cartridge. Color is 1,500 pager per toner cartridge. Compatible With MFC-L8600CDW, MFC-L8850CDW, HL-L8250CDN, HL-L8350CDW, HL-L8350CDWT Works with ALL Brother laser printers that use TN336 & TN331 toner cartridges.
Product feature: Brand: E-Z ink, Page Yield: Black is 2,500 per toner cartridge. Color is 1,500 pager per toner cartridge, All toner cartridges are manufactured in an ISO 9001 certified facility. All toner cartridges are engineered to produce superb results., All products covered by a 100% satisfaction guarantee and 1 year warranty, Compatible With MFC-L8600CDW, MFC-L8850CDW, HL-L8250CDN, HL-L8350CDW, HL-L8350CDWT Laser Printer
Product brand: E-Z Ink
Target attributes: Type
Answer: attribute: type
value: laser
source: product feature
attribute: type
value: toner cartridge
source: product feature
attribute: type
value: laser
source: product description
attribute: type
value: toner cartridge
source: product title
attribute: type
value: toner cartridges
source: product feature
attribute: type
value: toner cartridges
source: product description
attribute: type
value: toner cartridge
source: product description