メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.786874050295 35.8465353033205, 139.786430754832 35.8466163800862, 139.786511816019 35.8463967702351, 139.787031478713 35.8462633171458, 139.787064439277 35.8462323829072, 139.787152039434 35.8464873586213, 139.787037198272 35.8465004259477, 139.786874050295 35.8465353033205)) ^^http://www.opengis.net/ont/geosparql#wktLiteral