メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.902863955627 43.4965377746435, 141.901261928237 43.4968103448647, 141.901086341508 43.496445450412, 141.900698880183 43.4957821144697, 141.900646081564 43.4957039966411, 141.902519449548 43.495414887467, 141.902863955627 43.4965377746435)) ^^http://www.opengis.net/ont/geosparql#wktLiteral