メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.010071354956 37.7552708444579, 139.010026149936 37.7554139368108, 139.010015758983 37.7554695910233, 139.008540798274 37.7552561932685, 139.008708074798 37.7550281068964, 139.009050446503 37.7546453907576, 139.009444881556 37.7548773899108, 139.010071354956 37.7552708444579)) ^^http://www.opengis.net/ont/geosparql#wktLiteral