メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.631070626638 34.7998890587585, 134.633003226502 34.7998885276176, 134.633004273719 34.8001789730743, 134.632991147539 34.8008128649132, 134.631077775749 34.8008122233866, 134.629625732909 34.8008094388831, 134.6296057656 34.7998905311504, 134.631070626638 34.7998890587585)) ^^http://www.opengis.net/ont/geosparql#wktLiteral