メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.778433056182 35.4451799891536, 136.778427018046 35.445120217693, 136.778403800445 35.4447490600043, 136.779460938345 35.4446998329633, 136.779496035066 35.4450710304078, 136.778560085565 35.4451140949457, 136.77855907962 35.4451713785731, 136.778433056182 35.4451799891536)) ^^http://www.opengis.net/ont/geosparql#wktLiteral