メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.327798151856 43.1174945914213, 141.328145064542 43.1178295431344, 141.328476656014 43.1181621187991, 141.32882018037 43.1185122305461, 141.328388440307 43.1187429387357, 141.328041015285 43.1189271352661, 141.327329030551 43.119310929642, 141.326955272816 43.1189605691268, 141.326629828895 43.1186280386459, 141.326305872272 43.1182988939204, 141.325968194385 43.1179441089826, 141.3266889043 43.1175605342003, 141.32744520542 43.1171460880092, 141.327798151856 43.1174945914213)) ^^http://www.opengis.net/ont/geosparql#wktLiteral