Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: GREENCYCLE 3 PK High Yield Toner Cartridge Replacement for Brother TN660 TN630 Laserjet DCP-L2520DW HL-L2340DW HL-L2380DW Printer
Product description: GREENCYCLE TN660 is the compatible replacement of the OEM model. It is manufactured with the highest standards of quality, reliability and compatibility. We guarantee our products without defects in materials and workmanship. If the product is found to have problems under normal circumstance, demand for a return is acceptable. Meeting standards of ISO 9001&14001, we produce our products with 100% new components.
Product feature: Full 1 year warranty against manufacturer defects and print quality., Compatible new toner cartridge unit unconditionally guaranteed to provide same performance and reliability as genuine brother cartridge., Yield: Toner Cartridge up to 2,600 pages at 5% coverage (Letter size Paper) Actual toner yield varies with usage, graphics printed and environmental conditions., Compatible brother Printer below: DCP-L2520DW DCP-L2540DW DCP-L2300D DCP-L2500D HL-L2340DW HL-L2360DW HL-L2380DW MFC-L2700DW MFC-L2720DW MFC-L2740DW Series, Make your presentations and printouts stand out with this premium-grade toner that produces crisp, bold, and eye-catching text and graphics that ensure that people stay awake at your next meeting.
Product price: $21.98
Product brand: greencycle
Target attributes: Type
Answer: attribute: type
value: toner
source: product feature
attribute: type
value: toner cartridge
source: product feature
attribute: type
value: laserjet
source: product title
attribute: type
value: toner cartridge
source: product title