メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.836947672938 35.4231323735787, 136.837121733751 35.4242323846816, 136.836611094347 35.4242484595314, 136.835516602846 35.424269839529, 136.835354371686 35.4240337010685, 136.835384622358 35.4232718747824, 136.835372383011 35.4225128554437, 136.836698373972 35.422502281768, 136.836770238955 35.4225264899692, 136.836812717559 35.4225680480937, 136.836947672938 35.4231323735787)) ^^http://www.opengis.net/ont/geosparql#wktLiteral