メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.774089041101 35.6939277447094, 139.773978151363 35.6941892274523, 139.773405792025 35.6940319418882, 139.772463947532 35.6937735561648, 139.772562846959 35.6935059411017, 139.772780427095 35.692979278355, 139.774301831206 35.6933923446194, 139.774089041101 35.6939277447094)) ^^http://www.opengis.net/ont/geosparql#wktLiteral