メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.656838547522 43.1555131802247, 141.657285851422 43.1557476543488, 141.657774401153 43.1560037195009, 141.657831988267 43.1560339072704, 141.657913133352 43.1560764543971, 141.658183073623 43.1562154149383, 141.658555771389 43.1564073713699, 141.658979227486 43.1566254709146, 141.65915706988 43.1567170450998, 141.659484295996 43.1569027185619, 141.658881146755 43.1575562834883, 141.658644091816 43.1578115540006, 141.657850832911 43.1586657722591, 141.65757707185 43.1589605900802, 141.656881832552 43.1585933168563, 141.656510843605 43.1583977058434, 141.655880644771 43.1580707817647, 141.654878440193 43.1575509044445, 141.654753830918 43.1574880148108, 141.655007354161 43.1572051962742, 141.655787595599 43.1563383414213, 141.656626080121 43.1554066560141, 141.65677187316 43.1554790767061, 141.656838547522 43.1555131802247)) ^^http://www.opengis.net/ont/geosparql#wktLiteral