<?xml version="1.0" encoding="utf-8"?> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:traffic="http://www.sensormeasurement.appspot.com/ont/transport/traffic#"> <rdf:Description rdf:about=""> </rdf:Description> </rdf:RDF>