Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: K650M Dell nVidia 9800M GTX 2GB Laptop Video Card
Product description: K650M DELL Dell XPS M1730 2GB Nvidia 9800M GTX Laptop Video Card UR216 YM37
Product feature: Part Number is: K650M, Brand New and Original Replacement Part with 3 Months Warranty, Note: Picture may slightly vary from actual product. Please check the description before Buying!
Product brand: Dell
Target attributes: Output Resolution
Answer: attribute: output resolution
value: None
source: None