メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.361085286202 45.1189786640279, 142.36075059171 45.1190106313823, 142.360052278774 45.118943193033, 142.358965369264 45.1186631736031, 142.356549209133 45.1178614817581, 142.357152843366 45.116996792378, 142.357268518939 45.1167424599281, 142.357262994803 45.1165904663905, 142.358834560814 45.1163253128315, 142.359031229194 45.1162921497412, 142.361869837894 45.1159280635676, 142.361085286202 45.1189786640279)) ^^http://www.opengis.net/ont/geosparql#wktLiteral