メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.929440790939 42.5756984399997, 141.929366274966 42.575721864168, 141.928257930145 42.5760625564504, 141.927736288801 42.5751893603349, 141.927657196441 42.5750569082632, 141.92769394614 42.5750447730771, 141.928785707662 42.5746827995429, 141.930135207258 42.5742979018451, 141.931407247765 42.5738479247532, 141.931983769674 42.5748992028145, 141.931955009261 42.5749079854494, 141.930713751441 42.5752988328641, 141.930664425085 42.575314310055, 141.929440790939 42.5756984399997)) ^^http://www.opengis.net/ont/geosparql#wktLiteral