メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.779412684838 35.3559123237961, 136.779345143975 35.3566756915056, 136.777408871332 35.3566667637204, 136.776318650755 35.3566890749527, 136.776352339373 35.356493483339, 136.776454066407 35.3559026243706, 136.776582505923 35.3551368546717, 136.778195976273 35.3551340445378, 136.779537574182 35.3551369577755, 136.779412684838 35.3559123237961)) ^^http://www.opengis.net/ont/geosparql#wktLiteral