メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.54944339999 34.0583433748862, 134.549437144561 34.0582410876899, 134.549560994544 34.0582994063112, 134.549707208384 34.0583800004583, 134.549705174544 34.0584209428842, 134.549454401786 34.0584394927967, 134.54944339999 34.0583433748862)) ^^http://www.opengis.net/ont/geosparql#wktLiteral