メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.011491651705 43.5688540441604, 145.011448531592 43.5688120169952, 145.011344616739 43.5687137276309, 145.011042920031 43.5684609468052, 145.010832217255 43.5679646679656, 145.011404965111 43.5675426218, 145.01206700736 43.5670347698866, 145.012948755147 43.5676255677789, 145.012991869814 43.5676547620828, 145.012556735757 43.5680025355151, 145.011491651705 43.5688540441604)) ^^http://www.opengis.net/ont/geosparql#wktLiteral