メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.044170997399 37.9220238849424, 139.04374741653 37.9220972259019, 139.043649941946 37.9216850441675, 139.043317114645 37.9206456436991, 139.043869654426 37.9205231383144, 139.043878703102 37.920521265526, 139.044119718572 37.9213261263748, 139.044302658606 37.9220022989623, 139.044170997399 37.9220238849424)) ^^http://www.opengis.net/ont/geosparql#wktLiteral