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

Input:
Product title: Dell Inspiron 15 5000 Series i5547-3750sLV 15-Inch Laptop
Product description: An all- around showstopper: Web pages, games and apps fire up faster with powerful 4th Gen Intel Core processors. A 2GB discrete graphics option makes it easier to handle intense photo- or video-editing sessions without slowing down performance. And with up to 1TB of storage you can keep all your files with you all the time. The Inspiron 15 is up to 21% thinner and 19% lighter than previous models, and more beautiful than ever before. The elegant brushed aluminum design is poised to impress a the coffee shop, airport or wherever you're headed next. Plus it stays cool to the touch after hours of use.
Product feature: 4th Generation Intel Core i5-4210U processor, 8 GB DDR3 (1.7 GHz Native Clocking Speed; up to 2.7 Ghz with Turboboost), 1000 GB 5400 rpm Hard Drive, 15-Inch Screen, Windows 8.1
Product price: $156.49
Product brand: Dell
Target attributes: Resolution
Answer: attribute: resolution
value: None
source: None