メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.872295452627 35.4202201125655, 136.871095005804 35.4202203015174, 136.871078128946 35.4173336534461, 136.871467146013 35.4173076035782, 136.872030553489 35.4172946561216, 136.872068255344 35.4172943258077, 136.87220293416 35.4172931415897, 136.873545373809 35.4172812832315, 136.87356458017 35.4172811894647, 136.873598245425 35.4202122096445, 136.872295452627 35.4202201125655)) ^^http://www.opengis.net/ont/geosparql#wktLiteral