メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.759516823224 42.9010912832585, 140.758331931752 42.9011485527527, 140.758295152867 42.9011503238127, 140.757158160631 42.901205332097, 140.757134982831 42.9012064358295, 140.757060339476 42.9002867186186, 140.75705763273 42.9002402648214, 140.757038424674 42.8999140261454, 140.758177411183 42.8998664991884, 140.758171358945 42.89984370254, 140.75939216644 42.8997795152603, 140.759516823224 42.9010912832585)) ^^http://www.opengis.net/ont/geosparql#wktLiteral