#magnetic_levitation  high-speed rail technology; train is suspended on a magnetic cushion above a magnetized track and so travels free of friction
  supertype:  #rail_technology__railroading  the activity of designing and constructing and operating railroads
     supertype:  #technology__engineering  the practical application of science to commerce or industry
        supertype:  #practical_application__practicalapplication__application  the act of bringing something to bear; using it for a particular purpose; "he advocated the application of statistics to the problem"; "a novel application of electronics to medical diagnosis
           supertype:  #utilization__use__usage__utilisation__employment__exercise  the act of using; "the steps were worn from years of use"
              supertype:  #activity  any specific activity or pursuit; "they avoided all recreational activity"
                 supertype:  #human_action__humanaction__act__human_activity__humanactivity  something that people do or cause to happen
                    supertype:  pm#process__proces  situation commonly considered as making a change during some period of time
                       supertype:  pm#situation  something that "occurs" in a real/imaginary region of time and space
                          supertype:  pm#thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                       supertype:  pm#process_or_process_description
                          supertype:  pm#processing_thing
                             supertype:  pm#thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                                supertype:  pm#thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                    supertype:  sumo#process__proces__physicalsituation  intuitively, the class of things that happen and have temporal parts or stages; examples include extended events like a football match or a race, actions like pursuing and reading, and biological processes; sumo#process is not identical to pm#situation because an instance of pm#situation is not necessarily an instance of sumo#physical
                       supertype:  pm#situation  something that "occurs" in a real/imaginary region of time and space
                       supertype:  pm#process_or_process_description
                       supertype:  sumo#physical__physical_thing  an entity that has a location in space-time; locations are themselves understood to have a location in space-time; click here for more details on the identical category sowa#physical_thing
                          supertype:  pm#thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
        supertype:  #profession  an occupation requiring special education (especially in the liberal arts or sciences)
           supertype:  #line_of_work__occupation__business__job__line  the principal activity in your life that you do to earn money; "he's not in my line of business"
              supertype:  #activity  any specific activity or pursuit; "they avoided all recreational activity"

No statement uses or specializes #magnetic_levitation; click here to add one.