メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.844293370901 37.7689516379234, 140.842633034826 37.7699593931763, 140.842449182871 37.7700358637833, 140.841748828324 37.7702723230376, 140.841076368334 37.7704605319041, 140.840414463989 37.7706097896682, 140.840819690452 37.7701957999731, 140.841222847502 37.7697210064205, 140.841667615482 37.7693852283653, 140.842176056516 37.7691412605986, 140.842693542426 37.7690085733392, 140.843645579113 37.7689049622113, 140.844293370901 37.7689516379234)) ^^http://www.opengis.net/ont/geosparql#wktLiteral