メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.780360054893 35.4157672621146, 136.780219196989 35.4158383252681, 136.780164077556 35.4156083004552, 136.779357595682 35.4156384418919, 136.779356678365 35.41583036687, 136.77664958398 35.4159245543211, 136.776638194891 35.4156811477886, 136.776626681343 35.4154549236681, 136.779516058204 35.4153579032654, 136.779514379778 35.4152678654263, 136.779504632538 35.4151204458638, 136.779929056458 35.4151048266591, 136.780047250313 35.4151863965, 136.780219129806 35.415184972051, 136.780360054893 35.4157672621146)) ^^http://www.opengis.net/ont/geosparql#wktLiteral