document
  default <http://www.ncl.ac.uk/>
  prefix var <http://openprovenance.org/var#>
  
  entity(var:Result, [value='var:value'])
  entity(var:Procedure)
  entity(var:FeatureOfInterest, [value='var:type', value='var:theme'])
  used(var:Observation, var:FeatureOfInterest, -)
  used(var:Observation, var:Procedure, -)
  wasAssociatedWith(var:Observation, var:Sensor, -)
  activity(var:Observation, -, -, [value='var:timestamp'])
  wasGeneratedBy(var:Result, var:Observation, -)
  agent(var:Sensor, [value='var:sensorname'])
endDocument