NML currently defines three services: AdaptationService, DeadaptationService and SwitchingService.

Proposal for syntax in RDF:

  @prefix  nml:  <http://schemas.ogf.org/nml/2012/10/base#">
  urn:ogf:...:myservice     a                   nml:SwitchingService  .

Proposal for syntax in XML:

  <nml:SwitchingService id="...">


Alternative RDF and XML syntax:

  @prefix  nml:  <http://schemas.ogf.org/nml/2012/10/base#">
  urn:ogf:...:myservice     a                   nml:SwitchingService  .
  nml:SwitchingService      rdfs:isSubclassOf   nml:Service  .

  <nml:Service type="http://schemas.ogf.org/nml/2012/10/base#SwitchingService" id="...">

Rationale for this proposal: because of the very different relations associated with a AdaptationService and a 
SwitchingService (and later perhaps a tunable label service), the different services are described in a different way in
 the document. This is slightly easier to write (e.g. "a Switching Service" instead of a "Service of type 
SwitchingService"), so I thought it would be OK to use the same separation in the XML and RDF syntax.