メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.663659783635 35.1004496209732, 136.663332705727 35.1003446456433, 136.663177099918 35.100324580426, 136.663008725233 35.1003045848, 136.663028919341 35.1001158766484, 136.662511438302 35.1000689843771, 136.662642459949 35.0992642290186, 136.663823508745 35.0994045365519, 136.663659783635 35.1004496209732)) ^^http://www.opengis.net/ont/geosparql#wktLiteral