メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.993192083936 34.8754030330133, 136.993908555238 34.876337746882, 136.994368146006 34.8769459300457, 136.993253763232 34.8775314347711, 136.992421365996 34.8763607518566, 136.992139963471 34.8759569944337, 136.991648283433 34.8751381010778, 136.992749201031 34.8748395918942, 136.993192083936 34.8754030330133)) ^^http://www.opengis.net/ont/geosparql#wktLiteral