メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.35922775966 37.4209658007314, 140.359201093731 37.4213588912085, 140.358367802472 37.4213274064324, 140.358395966022 37.420902066215, 140.358478122071 37.4208808628778, 140.358662168996 37.4208523047434, 140.358821241419 37.4208118908286, 140.358905742684 37.4207916607528, 140.359024881941 37.4207393153877, 140.359087927544 37.4208057744747, 140.35922775966 37.4209658007314)) ^^http://www.opengis.net/ont/geosparql#wktLiteral