メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.053783158924 42.9211500493699, 143.053755097623 42.9211482763868, 143.053178521748 42.9211109629959, 143.053075464205 42.9211043003018, 143.052990032387 42.9210987095778, 143.053186345305 42.9198935991599, 143.053902988242 42.9199367530079, 143.053783158924 42.9211500493699)) ^^http://www.opengis.net/ont/geosparql#wktLiteral