メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.995922301639 34.9008472836477, 136.995679493452 34.9010008275401, 136.995320891632 34.9011756882029, 136.995226253338 34.90118386542, 136.994512187226 34.9004290616149, 136.994348679005 34.9002590265218, 136.994351395926 34.9002579747426, 136.996845463523 34.89935683906, 136.997296426756 34.8998690585899, 136.996979953966 34.9001025793537, 136.996668556426 34.9003346273699, 136.995922301639 34.9008472836477)) ^^http://www.opengis.net/ont/geosparql#wktLiteral