メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.334372216033 43.7502855584329, 142.334953467218 43.7504542237633, 142.334969504663 43.7504595204771, 142.335521962309 43.7506419197635, 142.33507027324 43.75142760869, 142.334575764435 43.7522293072726, 142.334090915981 43.752074560636, 142.33400715861 43.7520501862127, 142.333546610801 43.7518954868664, 142.333444903655 43.7518616310399, 142.332923132756 43.7516996193732, 142.333380244845 43.7508993519146, 142.333863620125 43.7501343610991, 142.334372216033 43.7502855584329)) ^^http://www.opengis.net/ont/geosparql#wktLiteral