メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.902640186379 35.3250218637592, 134.902938420986 35.3253186268437, 134.902542112737 35.3255861840776, 134.902229515502 35.3252751931299, 134.902640186379 35.3250218637592)) ^^http://www.opengis.net/ont/geosparql#wktLiteral