メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.593715926097 37.6649490203936, 140.593629036546 37.6649989983342, 140.593451024524 37.6651098208809, 140.593328573143 37.6652069111597, 140.593176771486 37.66528293176, 140.59294724741 37.6653267894907, 140.592834348135 37.6649366926645, 140.593579708016 37.6647905302677, 140.593715926097 37.6649490203936)) ^^http://www.opengis.net/ont/geosparql#wktLiteral