_:vb57980	<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>	<http://www.w3.org/2002/12/cal/ical#Vfreebusy> .
_:vb57980	<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#nil> .