old_contents: from rdflib.namespace import ClosedNamespace
  
  RHO = ClosedNamespace(uri='urn:rho:', terms=['Owner'])
  
new_contents: from rdflib.namespace import ClosedNamespace, Namespace
  
  RHO = ClosedNamespace(uri='urn:rho:', terms=['Owner'])
  
  #: Namespace for working with events.
  EVENT = Namespace('http://purl.org/NET/c4dm/event.owl#')
  
  #: Namespace for working with schema.org data types
  SCHEMA = Namespace('http://schema.org/')
  
  #: Namespace for working with WGS84 data types
  WGS_84 = Namespace('http://www.w3.org/2003/01/geo/wgs84_pos#')
  
  #: Namespace for working with location data types
  LOCATION = Namespace('http://www.w3.org/ns/locn#')
  
subject: Move common namespaces to rhobot.