メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.371251866945 43.779113603009, 142.371432428894 43.7794287400999, 142.371439223351 43.7794405993526, 142.371674308599 43.7798767738227, 142.371763200622 43.7800387914786, 142.372080702067 43.7803187635091, 142.370875017324 43.7810460847483, 142.370421286201 43.7802326807547, 142.370178077308 43.7798074296159, 142.370002643634 43.7794817202517, 142.369777397989 43.7790756130386, 142.371035747336 43.7787005446177, 142.371251866945 43.779113603009)) ^^http://www.opengis.net/ont/geosparql#wktLiteral