メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.374762396459 42.9780199689921, 144.37475844752 42.9780054844842, 144.374546331147 42.9772307622306, 144.374320270687 42.9772521927577, 144.37418697259 42.9765354337879, 144.374383168918 42.9765145577196, 144.374167035713 42.9758008149639, 144.374643190463 42.9756330273992, 144.374682904836 42.9756125977525, 144.374942103397 42.976447557406, 144.375037251337 42.9768518570787, 144.375568383614 42.9768061871699, 144.376482409063 42.9774878182856, 144.376012444454 42.9778354666162, 144.375335679957 42.9779353973167, 144.374762396459 42.9780199689921)) ^^http://www.opengis.net/ont/geosparql#wktLiteral