メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.756953202558 35.4356060318972, 136.756804380346 35.4360931455289, 136.756735594106 35.436568133859, 136.7559922802 35.4363694771408, 136.754686119451 35.4360346567406, 136.754855587156 35.4355932139953, 136.755042664683 35.4351233456184, 136.756953202558 35.4356060318972)) ^^http://www.opengis.net/ont/geosparql#wktLiteral