メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.581651941591 42.9057400269718, 141.582195161594 42.9065379999539, 141.582826286146 42.9074553409333, 141.582647203298 42.9075198458297, 141.582378649286 42.9076166026312, 141.581918675097 42.9077861592132, 141.580775426193 42.9082075145582, 141.580308062119 42.90838707914, 141.578593069596 42.9090018547999, 141.578192722695 42.9091542344102, 141.577574144051 42.9082277981954, 141.576793265585 42.9070551599963, 141.576289887881 42.9063261056556, 141.576781801996 42.9061539451615, 141.577788933904 42.9057951981709, 141.578429723156 42.9055511139172, 141.578894094868 42.9053898956386, 141.580471904498 42.9048255881949, 141.580933598098 42.9046500695821, 141.581651941591 42.9057400269718)) ^^http://www.opengis.net/ont/geosparql#wktLiteral