メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.365109636065 43.7361541956872, 142.365255201346 43.7365934330831, 142.365535737351 43.7366751265775, 142.365207042908 43.7372293813723, 142.36458261765 43.7383861143299, 142.363867404566 43.7381755689659, 142.363872177647 43.738167125618, 142.363159744442 43.7379610034236, 142.36385330504 43.7367967021633, 142.364498344549 43.7356424682598, 142.364989090881 43.7357886972154, 142.365109636065 43.7361541956872)) ^^http://www.opengis.net/ont/geosparql#wktLiteral