メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.455772166792 43.0548855901789, 144.455064737157 43.0546265782843, 144.456516998311 43.0528301290448, 144.457665491307 43.0514372909544, 144.458015162296 43.0510326303005, 144.458141969416 43.0509215267142, 144.458329564537 43.0507674750859, 144.458442281596 43.050707277703, 144.458453640106 43.0510074946121, 144.458437694139 43.0513218127308, 144.458342363311 43.051732674778, 144.458192646711 43.0521618867207, 144.457971148824 43.0525522589159, 144.457781549052 43.052810924309, 144.457753031879 43.0528499432882, 144.457671493028 43.052961367685, 144.455772166792 43.0548855901789)) ^^http://www.opengis.net/ont/geosparql#wktLiteral