メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.935674490566 38.9697144653596, 139.934766742266 38.9699065849136, 139.934439637629 38.968923766853, 139.934968505218 38.9688069263302, 139.935379386688 38.9687881986641, 139.935625191955 38.9694559385739, 139.935602359576 38.9694792687467, 139.935674490566 38.9697144653596)) ^^http://www.opengis.net/ont/geosparql#wktLiteral