メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.628219406675 36.5809440488343, 136.627726279025 36.5810197233079, 136.627709431673 36.5803968095573, 136.629014221729 36.5803812092801, 136.629042660692 36.5803403938905, 136.629066782709 36.5799698574229, 136.62981723021 36.5796815647102, 136.630243394674 36.5793857353532, 136.631015211279 36.5800256269286, 136.629504307872 36.580742023825, 136.629446226552 36.5807646443401, 136.629289139719 36.5807945666584, 136.62897603708 36.5808256852784, 136.628219406675 36.5809440488343)) ^^http://www.opengis.net/ont/geosparql#wktLiteral