メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.31751811283 43.1120110540498, 141.316646891107 43.1124772591279, 141.316287662954 43.1126740605664, 141.315912952253 43.1128788220913, 141.315258901763 43.1122194407895, 141.314567747157 43.1115517334357, 141.314931243204 43.1113582075882, 141.31528159019 43.1111645032008, 141.315543329588 43.1110152238604, 141.315635956369 43.1109966400959, 141.316095291348 43.1107433408197, 141.31609935641 43.1107411234936, 141.316178185681 43.1106956315371, 141.31751811283 43.1120110540498)) ^^http://www.opengis.net/ont/geosparql#wktLiteral