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: Microsoft Lumia 950 XL RM-1116 32GB White, Dual Sim, 5.7",GSM Unlocked International Version, No Warranty
Product description: * 5.7 inches AMOLED capacitive touchscreen, 16M colors Microsoft Windows 10 * 32 GB, 3 GB RAM, microSD, up to 200 GB * 20 MP, 4992 3744 pixels, Carl Zeiss optics, optical image stabilization, autofocus, triple-LED RGB flash * HSDPA 850/900/1700(AWS)/1900/2100, LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 20(800), 28(700), 38(2600), 40(2300)
Product feature: Screen: 5.7-inch AMOLED Multi-Touchscreen w/ ClearBlack display & Protective Corning Gorilla Glass 4. Microsoft Windows 10, Quad-Core 1.5 GHz Cortex-A53 + Quad-Core 2.0 GHz Cortex-A57 Processor.Storage: 32 GB, Memory:RAM: 3 GB., Unlocked cell phones are compatible with GSM carriers such as AT&T and T-Mobile, but are not compatible with CDMA carriers such as Verizon and Sprint., Please check if your GSM cellular carrier supports the bands for this model before purchasing, LTE may not be available in all countries: 2G: GSM 850 / 900 / 1800 / 1900, 3G: 850 / 900 / 1700(AWS) / 1900 / 2100, 4G: LTE 700 / 800 / 850 / 900 / 1700 (AWS) / 1800 / 1900 / 2100, 2300 / 2500 / 2600 (Bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40, 41)., This device may not include a US warranty as some manufacturers do not honor warranties for international items., The box contains: Your new device, USB cable, Charger (may be foreign) If so, a FREE US adapter will be included, Documentation.
Product price: $103.91
Product brand: Microsoft
Target attributes: Display Resolution
Answer: attribute: display resolution
value: None
source: None