メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.431100865399 43.0644614457437, 141.432228435807 43.0644288481309, 141.432312157304 43.0657301364687, 141.432382967627 43.0668914448845, 141.432386599067 43.067087482149, 141.43128746954 43.0671131090292, 141.429942120923 43.0671593283111, 141.429875772329 43.0662711443783, 141.429763377558 43.065088155945, 141.429733624159 43.0645061701232, 141.430105445606 43.0644887178414, 141.430447185672 43.0644827935519, 141.431100865399 43.0644614457437)) ^^http://www.opengis.net/ont/geosparql#wktLiteral