メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.768221900757 35.397604717521, 136.767898607798 35.3975974605289, 136.767533058184 35.3976305566964, 136.76608901233 35.3978228489443, 136.766012281668 35.3973830207733, 136.766999950682 35.3972593714246, 136.767763417649 35.3971509642578, 136.768279350118 35.3970545585093, 136.768221900757 35.397604717521)) ^^http://www.opengis.net/ont/geosparql#wktLiteral