メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.923115248361 35.1047947018051, 136.922453082153 35.1046424388844, 136.922385794045 35.1046195552667, 136.921544812404 35.1041246593103, 136.922137169211 35.1030461536409, 136.923612202993 35.1035869817968, 136.923593611225 35.1036219459918, 136.923703646192 35.1036638600223, 136.923115248361 35.1047947018051)) ^^http://www.opengis.net/ont/geosparql#wktLiteral