メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.79914419854 35.3856017872523, 136.798584580732 35.3856057936287, 136.797003599103 35.3855871074721, 136.796542258006 35.3855801286859, 136.796563626779 35.3836181423964, 136.79903925357 35.3832655576339, 136.799173073721 35.3832423726549, 136.799155430891 35.3845734038947, 136.79914419854 35.3856017872523)) ^^http://www.opengis.net/ont/geosparql#wktLiteral