メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.400823628909 43.1279055004327, 141.401260325402 43.1280865040107, 141.400802453278 43.1286036740525, 141.400520840866 43.1289147537992, 141.400255308594 43.1291947276157, 141.39920445659 43.1286250231928, 141.398936555969 43.1284726393445, 141.399188523979 43.1281808914743, 141.399480951287 43.1278864233773, 141.399840306021 43.1275015168357, 141.400398612438 43.1277202916337, 141.400823628909 43.1279055004327)) ^^http://www.opengis.net/ont/geosparql#wktLiteral