メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.379734984797 43.7399799782573, 142.37947939754 43.74047666348, 142.379317812124 43.7407306875351, 142.378604220035 43.7405184126673, 142.377944304703 43.740322107367, 142.37837416614 43.7395754679897, 142.378822054461 43.7387975117962, 142.379339291015 43.7389513053939, 142.380151125648 43.7391927016215, 142.379935827237 43.7395932480847, 142.379734984797 43.7399799782573)) ^^http://www.opengis.net/ont/geosparql#wktLiteral