メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.989793034464 34.8946592487556, 136.988098962017 34.8946489441674, 136.987828073024 34.8946525595678, 136.987940035038 34.8936286148924, 136.988787070219 34.8937601563802, 136.989361286023 34.8938511481592, 136.989534695808 34.8938680940962, 136.989734209043 34.8938993747044, 136.98975868251 34.8941906347025, 136.989793034464 34.8946592487556)) ^^http://www.opengis.net/ont/geosparql#wktLiteral