メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.79055505581 35.3157829188192, 136.790379962325 35.3161641446445, 136.790310732006 35.3163001299928, 136.789787141228 35.3162925789561, 136.789162486827 35.3162906254948, 136.789200303542 35.3147442196546, 136.789812350532 35.3147476129761, 136.790422586336 35.3147436021774, 136.791074344156 35.3147530282048, 136.79055505581 35.3157829188192)) ^^http://www.opengis.net/ont/geosparql#wktLiteral