メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.335083853824 43.0513282458002, 141.335021918378 43.0518302554388, 141.335000651116 43.0520028148607, 141.334142220086 43.051946854344, 141.333911908976 43.051931295061, 141.333288419495 43.0518890957918, 141.333320547685 43.0516637359232, 141.333383377201 43.0512120909619, 141.33340602638 43.0510435516122, 141.333431706962 43.0508582276503, 141.333469543326 43.0505392348187, 141.335166072349 43.0506616158409, 141.335126268106 43.0509845320425, 141.335083853824 43.0513282458002)) ^^http://www.opengis.net/ont/geosparql#wktLiteral