メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.351297072273 43.1046095780187, 141.350720339206 43.1045369838889, 141.350096580124 43.1044511477367, 141.35017117684 43.1041418677096, 141.35022854178 43.103901514859, 141.350282707743 43.1037025604322, 141.350358391104 43.103404119441, 141.350416366288 43.1031876132673, 141.35104314529 43.1032762863331, 141.351508225976 43.1033371767818, 141.351599672082 43.1033516776036, 141.351520863342 43.1036737929522, 141.35142275496 43.1041210821352, 141.351297072273 43.1046095780187)) ^^http://www.opengis.net/ont/geosparql#wktLiteral