メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.377828655675 43.1042596967269, 141.378147425535 43.1046573528155, 141.378388120559 43.104976986054, 141.378658561321 43.1053245531455, 141.378480775808 43.1058870005201, 141.37805553435 43.1058147041317, 141.377535952032 43.105741618284, 141.376610095926 43.1055991148479, 141.37667297521 43.1053287700732, 141.376068100069 43.1052467988456, 141.376238521748 43.1046704447963, 141.376380580623 43.1042320641255, 141.376406481413 43.104111794105, 141.377220921804 43.1039138475003, 141.377615083961 43.1038082674832, 141.377828655675 43.1042596967269)) ^^http://www.opengis.net/ont/geosparql#wktLiteral