メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.934919668041 34.8914238847965, 136.933744059902 34.8915528493619, 136.933279869542 34.8916442228782, 136.933183373994 34.8912929405062, 136.933124875746 34.8905915490155, 136.934054302158 34.8905648802716, 136.935077581167 34.8905433813774, 136.935013956785 34.8908611131783, 136.934930884914 34.8913477005466, 136.934919668041 34.8914238847965)) ^^http://www.opengis.net/ont/geosparql#wktLiteral