メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.720987474535 35.1808440033467, 136.72058748765 35.1810904276271, 136.720515892887 35.1809829850963, 136.720472276346 35.1808338135822, 136.720462574148 35.1806393445534, 136.720597424409 35.1803542074533, 136.720613485428 35.1802010290043, 136.720604943397 35.1801395199891, 136.720812068368 35.1801121076442, 136.720827891982 35.1803482882842, 136.720887754027 35.180546531246, 136.72097391835 35.1808053625491, 136.720987474535 35.1808440033467)) ^^http://www.opengis.net/ont/geosparql#wktLiteral