メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.625022992545 35.4570434247051, 139.624472042229 35.4577506038233, 139.62384867816 35.4574437810999, 139.624338668144 35.4567554104448, 139.625237972846 35.4555258112753, 139.625516639402 35.4556599386053, 139.625952891105 35.4558640465749, 139.625022992545 35.4570434247051)) ^^http://www.opengis.net/ont/geosparql#wktLiteral