メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.437130065578 43.0188864678363, 141.437569170667 43.0186883756592, 141.438564878102 43.0182849309967, 141.438941029469 43.0181284432961, 141.439528928055 43.0179555930508, 141.43968484001 43.0183224879847, 141.439688485109 43.0183294762226, 141.440022430027 43.0189193150624, 141.439382279506 43.0197339116861, 141.439159838322 43.0200525464124, 141.438897803299 43.020407893654, 141.438593220502 43.02080598083, 141.438274070921 43.0212471459267, 141.437977897726 43.0216391717779, 141.437671905991 43.0220705130246, 141.437052013693 43.0213010536764, 141.43682044908 43.0209804586839, 141.436511824255 43.0205797714278, 141.435679648431 43.0194771846556, 141.43615131325 43.0192819322044, 141.437130065578 43.0188864678363)) ^^http://www.opengis.net/ont/geosparql#wktLiteral