メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.131335492694 43.6571631903753, 145.130053127799 43.6570663738295, 145.130053750969 43.6570632285284, 145.129983760665 43.6570579286265, 145.129984325816 43.6570535183764, 145.12997108161 43.6561205113917, 145.13003819536 43.6561224041794, 145.130888392687 43.6561467302288, 145.131402198155 43.6561566159372, 145.13134355672 43.6570685837475, 145.131342360214 43.6570840485194, 145.131335492694 43.6571631903753)) ^^http://www.opengis.net/ont/geosparql#wktLiteral