メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.382570198488 43.7482681317366, 142.382617153106 43.7485865815597, 142.382679042699 43.7488971021065, 142.382722604367 43.7491567503451, 142.381599238324 43.7494779679865, 142.381371029584 43.7495485674246, 142.380184336943 43.7499016994872, 142.380086175672 43.7494010512755, 142.3799973275 43.7490057697978, 142.379992458876 43.7489642322798, 142.379971339158 43.7488543610686, 142.380130705797 43.748665191814, 142.382511695751 43.7479580635479, 142.382570198488 43.7482681317366)) ^^http://www.opengis.net/ont/geosparql#wktLiteral