メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.379659666433 44.1749225543017, 142.379522161195 44.1753548576368, 142.376309484881 44.1748953600395, 142.376312751809 44.174886233503, 142.376343822935 44.174796193961, 142.376369903068 44.1747079528005, 142.376393455457 44.1746143356864, 142.376417006697 44.1745143893858, 142.376438048512 44.1744117744761, 142.376457839894 44.1743127467516, 142.376472648092 44.1742191212267, 142.376474126527 44.1742087653767, 142.37974194559 44.1746518476161, 142.379659666433 44.1749225543017)) ^^http://www.opengis.net/ont/geosparql#wktLiteral