メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.312701971903 43.0702476465447, 141.312916033923 43.0704208615966, 141.313189796656 43.0706423897929, 141.312673974027 43.0708573810957, 141.312670989716 43.0708586250451, 141.312221769664 43.0710458842031, 141.311266280244 43.07144412843, 141.311178472288 43.0711445097934, 141.311115467266 43.0708917931088, 141.311106084656 43.0708591536602, 141.311080923043 43.0707227901759, 141.31101427369 43.0705517656357, 141.310966414178 43.0704443313858, 141.310921542045 43.070354926769, 141.311596181828 43.0700168350118, 141.311613686762 43.0700075542637, 141.312091535679 43.0697537164799, 141.312701971903 43.0702476465447)) ^^http://www.opengis.net/ont/geosparql#wktLiteral