メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.579901697361 38.8954883572874, 141.581011068968 38.8956481130086, 141.581080919813 38.8956876399245, 141.582024683315 38.8960623292796, 141.582951527107 38.8963900377069, 141.582553804552 38.8970914564911, 141.582113380953 38.8972054845809, 141.581245377621 38.8974435884621, 141.580661217722 38.8976056165053, 141.58030087774 38.8977049084755, 141.579277327592 38.8979952288763, 141.57915548904 38.8974241824918, 141.579060811197 38.8969270712433, 141.57898402916 38.8963841699307, 141.578803122939 38.8953228226897, 141.579901697361 38.8954883572874)) ^^http://www.opengis.net/ont/geosparql#wktLiteral