メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.344739234353 43.087257135997, 141.344899876725 43.0872805713476, 141.345305250986 43.0873417316477, 141.345220688725 43.0877084594637, 141.345131134061 43.0880557374038, 141.344943294127 43.0887630221477, 141.344367825139 43.0886786559859, 141.344236142209 43.0886593500127, 141.343912270916 43.088611867136, 141.343428042266 43.088540872814, 141.3435154109 43.0881473018578, 141.3435903243 43.0878499839661, 141.343786211608 43.0871313711249, 141.34456293393 43.0872314158803, 141.344739234353 43.087257135997)) ^^http://www.opengis.net/ont/geosparql#wktLiteral