メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.821501929667 34.7123155808787, 137.821479759711 34.7126953362136, 137.820581759612 34.7126576277841, 137.820007705785 34.7126335621984, 137.820033606242 34.712278194404, 137.820045372332 34.7119721869535, 137.820357855065 34.7119164719871, 137.820878654513 34.7118400915971, 137.821489966372 34.7117556242251, 137.82151657661 34.7119691652846, 137.821501929667 34.7123155808787)) ^^http://www.opengis.net/ont/geosparql#wktLiteral