<http://data.silknow.org/timespan/1001_1500/start>	<http://www.w3.org/2006/time#inXSDDate>	"1001"^^<http://www.w3.org/2001/XMLSchema#gYear> .
<http://data.silknow.org/timespan/1001_1500/start>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/time#Instant> .