メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.993759550997 34.8782299076603, 136.994499489557 34.8792769133214, 136.994812538624 34.8797147974104, 136.99375242056 34.8802417851348, 136.992496820798 34.8784956529456, 136.993018424067 34.8782346181446, 136.993560782425 34.8779564259676, 136.993759550997 34.8782299076603)) ^^http://www.opengis.net/ont/geosparql#wktLiteral