メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.287308537869 43.1537319935193, 141.288487595634 43.1546291707866, 141.287994418456 43.154985035698, 141.286832670863 43.1558231388594, 141.286443228596 43.1555367180073, 141.28604828022 43.1552463111023, 141.285670713164 43.1549687080328, 141.285265326212 43.154670614635, 141.28491957861 43.1544163451641, 141.284367774909 43.1540105367583, 141.28555304805 43.1531422748538, 141.286019490276 43.1528006127381, 141.286053293088 43.1527767748125, 141.287308537869 43.1537319935193)) ^^http://www.opengis.net/ont/geosparql#wktLiteral