メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.123870252639 43.5410031177527, 142.12308823488 43.5409636841003, 142.120832411912 43.5408518355023, 142.120695908517 43.5409439832043, 142.12047492251 43.5409881811376, 142.120305713351 43.5409879919599, 142.120070441606 43.5409539037636, 142.120211771485 43.5400619681886, 142.120268013134 43.539655208042, 142.120454477218 43.5385508059985, 142.120724009847 43.5367829560701, 142.124310810886 43.5370936622496, 142.123870252639 43.5410031177527)) ^^http://www.opengis.net/ont/geosparql#wktLiteral