メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.991746583634 34.9066185789099, 136.98947574212 34.9074233943928, 136.989351968091 34.9074587103537, 136.989186048234 34.9074938936256, 136.989094336454 34.9075284816394, 136.989003511774 34.9075773675237, 136.988772693284 34.9076561929923, 136.988403282311 34.906503090437, 136.988291296386 34.9061750816128, 136.989282706167 34.9058723487104, 136.991202040862 34.9053045894935, 136.991746583634 34.9066185789099)) ^^http://www.opengis.net/ont/geosparql#wktLiteral