メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.871929416942 34.7375876374123, 135.87295608639 34.7380856359919, 135.872760918626 34.7383808271293, 135.872066890011 34.7393517906088, 135.871703784628 34.7391818176041, 135.871376895907 34.7390207547703, 135.871022966308 34.7388575506853, 135.870698782206 34.7386942360204, 135.870355929245 34.7385351263806, 135.869990932516 34.7383654286212, 135.870484065153 34.7376740328489, 135.870675093268 34.7373830711172, 135.870884245607 34.7370945232467, 135.871929416942 34.7375876374123)) ^^http://www.opengis.net/ont/geosparql#wktLiteral