メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.923716423607 35.1289452758796, 136.923680196994 35.1293374719366, 136.922667310418 35.1292740663114, 136.922698254955 35.1288864374538, 136.92273689952 35.1285540378478, 136.922759290088 35.1283615400982, 136.923491633162 35.1284126838895, 136.923479906991 35.1285292846321, 136.923752332928 35.1285437825142, 136.923750945627 35.1285561042678, 136.923744237442 35.1286213751743, 136.923716423607 35.1289452758796)) ^^http://www.opengis.net/ont/geosparql#wktLiteral