メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.13742418723 35.0747831037845, 137.136140270118 35.0749690875241, 137.135936637922 35.0744464648263, 137.13593350176 35.0743682200446, 137.135943040707 35.0743108954858, 137.136269273839 35.0742260554672, 137.136361825585 35.0740946666134, 137.136457042715 35.0739032746714, 137.136477551041 35.0738620811954, 137.137204254135 35.0737536190707, 137.13742418723 35.0747831037845)) ^^http://www.opengis.net/ont/geosparql#wktLiteral