メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.431349533603 37.3800312296188, 140.431125600276 37.3798598777461, 140.429579379489 37.3802389758764, 140.429437327647 37.379610591871, 140.429973734725 37.3793527539919, 140.430920495833 37.3786390380374, 140.431483831278 37.3783627521302, 140.431604893985 37.3785057566546, 140.432452590092 37.3795201684196, 140.431349533603 37.3800312296188)) ^^http://www.opengis.net/ont/geosparql#wktLiteral