Task: Question Generation
Input (English): Context : Terry Myerson, executive vice president of Microsoft's Windows and Devices Group, argued that the goal of this model was to reduce fragmentation across the Windows platform, as Microsoft aimed to have Windows 10 installed on at least one billion devices in the two to three years following its release. 
Subject : Windows 10 
Relation : based on
Output (English): The Windows 10 is based upon what?