メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.656001001502 43.1550599257179, 141.656626080121 43.1554066560141, 141.655787595599 43.1563383414213, 141.655007354161 43.1572051962742, 141.654753830918 43.1574880148108, 141.654082697676 43.1571491230301, 141.653586989887 43.1568987721095, 141.653084577229 43.156641843282, 141.652252583745 43.1562164412735, 141.651912137977 43.156039052534, 141.652131367017 43.1558061359985, 141.652712215873 43.1551797070879, 141.653268311845 43.1545834591299, 141.653884861511 43.1539384298952, 141.655081670431 43.154592105196, 141.656001001502 43.1550599257179)) ^^http://www.opengis.net/ont/geosparql#wktLiteral