メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.666096337524 42.6757905277664, 141.666686060889 42.6748213707795, 141.668702429286 42.6755134432202, 141.669641140746 42.6759466789628, 141.670182455891 42.6763818355399, 141.670827856919 42.6769005096195, 141.671981064624 42.6777812914481, 141.673033483462 42.6785865755, 141.673668239641 42.6790655110059, 141.673911927866 42.6792621255114, 141.674789643199 42.6799819747182, 141.674992673079 42.6801485592494, 141.675919046191 42.680980194233, 141.676456403639 42.6814611572636, 141.676575627965 42.6815678173724, 141.675324029472 42.6825263871306, 141.673409933119 42.683979014823, 141.671935966607 42.6829423170962, 141.669535058497 42.6818409860205, 141.666317370624 42.6802425413666, 141.664054387792 42.6791430602828, 141.664751650654 42.6780318293744, 141.66555094579 42.6766906963939, 141.666096337524 42.6757905277664)) ^^http://www.opengis.net/ont/geosparql#wktLiteral