メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.749904051046 35.4239136372458, 136.749814177864 35.4240334681364, 136.749164916319 35.4237226625667, 136.749320953772 35.423050044591, 136.749706521219 35.4231285109159, 136.749717022996 35.4231777705705, 136.749842904405 35.4237673759069, 136.749743505298 35.4237741135079, 136.749904051046 35.4239136372458)) ^^http://www.opengis.net/ont/geosparql#wktLiteral