メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.329501813136 43.0989034448706, 141.328993722034 43.099108717561, 141.328834399332 43.0991859190744, 141.328470049883 43.0993287723201, 141.328003113724 43.0995156644543, 141.327428876209 43.0988587355699, 141.327891116429 43.0986456452788, 141.328386863768 43.0984122870475, 141.32889003225 43.0981957950021, 141.329501813136 43.0989034448706)) ^^http://www.opengis.net/ont/geosparql#wktLiteral