メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.238919595334 34.8265391789023, 137.241133264509 34.8262335326626, 137.238797692314 34.827767601438, 137.237800618904 34.8284218222823, 137.237253822027 34.8282643802252, 137.237157680632 34.8277235145733, 137.237061629106 34.827284071906, 137.236979214763 34.8268108124785, 137.238919595334 34.8265391789023)) ^^http://www.opengis.net/ont/geosparql#wktLiteral