メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.351382143011 43.0913193116187, 141.351283063931 43.0917554832334, 141.35126439927 43.0918111771619, 141.351100475059 43.0924487532038, 141.350113295872 43.0923120828496, 141.34953883109 43.0922294289909, 141.349491288275 43.0924285771141, 141.348478189547 43.092292883977, 141.348587307683 43.0918410384645, 141.347463463353 43.0916868814239, 141.347507913199 43.091515630237, 141.347582218567 43.0912718238425, 141.347673216593 43.0909040196538, 141.347702641167 43.0908280159499, 141.349809279678 43.0911077073421, 141.350380186911 43.0911903323549, 141.351382143011 43.0913193116187)) ^^http://www.opengis.net/ont/geosparql#wktLiteral