メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.323463734365 43.764244310243, 142.32347112915 43.7642321044179, 142.324104795813 43.7644210529518, 142.323752905949 43.7650214228765, 142.323455530408 43.765535911821, 142.322816449376 43.7653351835875, 142.322274581639 43.7651761086971, 142.322370053992 43.764979254067, 142.322880080686 43.7640715174252, 142.322991052649 43.7640972897463, 142.323463734365 43.764244310243)) ^^http://www.opengis.net/ont/geosparql#wktLiteral