メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.403167184585 43.7536805083365, 142.403230983768 43.7541788640402, 142.401276912924 43.7542760043057, 142.399197120911 43.7543932994537, 142.399152616868 43.7539018770066, 142.399117714648 43.7534034643854, 142.401170689086 43.7533032074147, 142.403113080679 43.7532030422383, 142.403167184585 43.7536805083365)) ^^http://www.opengis.net/ont/geosparql#wktLiteral