メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.90461595774 35.0956424473584, 136.903936298725 35.0955038505293, 136.902911454832 35.0952947743001, 136.901233211386 35.0949524175729, 136.901226618557 35.0949511347356, 136.900484748348 35.0949627428178, 136.900400244492 35.0943568353779, 136.901513837126 35.094582317723, 136.901589077264 35.0943515604187, 136.905059505732 35.0950655598932, 136.904859838225 35.095716290255, 136.90461595774 35.0956424473584)) ^^http://www.opengis.net/ont/geosparql#wktLiteral