メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.727432371544 35.4384465362306, 136.727332295617 35.4389700193364, 136.726543889802 35.4387509650202, 136.726288831476 35.4386834902672, 136.725188130529 35.4385120181622, 136.725286061593 35.4381156349477, 136.725381270119 35.437697869498, 136.72646453832 35.4378612837142, 136.727533372223 35.4380216429815, 136.727432371544 35.4384465362306)) ^^http://www.opengis.net/ont/geosparql#wktLiteral