メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.34486463555 43.7973654940169, 142.344472446768 43.7976523633562, 142.344215372536 43.797834727536, 142.343070970697 43.7976332824156, 142.342987973012 43.797594515683, 142.342246880406 43.7972483460111, 142.342028966904 43.7970695896461, 142.342416779387 43.7968008402697, 142.342866292891 43.7964894419278, 142.343346632249 43.7961556537473, 142.344943936906 43.7973015231836, 142.34486463555 43.7973654940169)) ^^http://www.opengis.net/ont/geosparql#wktLiteral