メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.702979420505 35.3146842731775, 136.702445067452 35.3147854597728, 136.70248780889 35.3147031580806, 136.702591000313 35.3145734115367, 136.702746012925 35.3144183700365, 136.702847024975 35.3143317148372, 136.70287784106 35.314366552649, 136.702979420505 35.3146842731775)) ^^http://www.opengis.net/ont/geosparql#wktLiteral