メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.150329393376 39.6966161305685, 141.15149425694 39.6971745776532, 141.151613560364 39.6972320598629, 141.152360284402 39.6975955531977, 141.151915566058 39.6981344896191, 141.151484583502 39.698671381035, 141.151304904751 39.6989158199113, 141.150417118769 39.6985487661156, 141.149290361997 39.6982193038489, 141.149148983545 39.6981302464378, 141.148990134884 39.6980954579451, 141.148443850862 39.698069923051, 141.147716673102 39.6981438547526, 141.1475416591 39.6978694216679, 141.14757945777 39.6977882150813, 141.147911820738 39.6974087796225, 141.148566132917 39.6965964195671, 141.149031506607 39.6960189073102, 141.149104782392 39.6960469637195, 141.150329393376 39.6966161305685)) ^^http://www.opengis.net/ont/geosparql#wktLiteral