メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.33064093441 43.7579081314048, 142.33045461075 43.7582257444325, 142.330425821753 43.7582811420706, 142.330229673254 43.7586233211585, 142.330147805891 43.7585963571901, 142.329580482588 43.7583974108716, 142.32942933199 43.7583569046204, 142.329002529696 43.758233926982, 142.329646441617 43.7571162550609, 142.33010189191 43.7572599904283, 142.330872987252 43.7575031122528, 142.33064093441 43.7579081314048)) ^^http://www.opengis.net/ont/geosparql#wktLiteral