メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.30760710171 43.1193766867084, 141.307246912739 43.119563050436, 141.30694797341 43.1192561647363, 141.306637865945 43.1189378118031, 141.306342796083 43.1186348935696, 141.306037537076 43.1183215112188, 141.306949806014 43.1178242040627, 141.308186102088 43.1171493696985, 141.308544110734 43.1174920648489, 141.308883304252 43.1178225084661, 141.309244638276 43.1181744419058, 141.309464374595 43.1183884244186, 141.30833627083 43.1189875006732, 141.307962999867 43.1191883170257, 141.30760710171 43.1193766867084)) ^^http://www.opengis.net/ont/geosparql#wktLiteral