Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Lenovo H50 (90BH000PUS) Desktop(Black) (Discontinued by Manufacturer)
Product description: The Lenovo H50 with the latest AMD processing and graphics technology delivers responsive performance with an immersive multimedia experience that includes 5.1 channel surround sound, Full HD graphics support, and DVD read/write. Perfect for enjoying music, movies, gaming, and surfing the web.
Product feature: AMD A6-6310 Processor 2 GHz( cache), 6 GB DDR3 RAM, 1 TB 7200 rpm Hard Drive, AMD Integrated ATI Radeon R4, Windows 8.1
Product brand: Lenovo
Target attributes: Monitor Resolution
Answer: attribute: monitor resolution
value: None
source: None