メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.815751587425 35.3113808503172, 134.807041838839 35.3089337797506, 134.80835219563 35.3052449270904, 134.808542393594 35.30443642432, 134.817146807568 35.3059887177461, 134.815751587425 35.3113808503172)) ^^http://www.opengis.net/ont/geosparql#wktLiteral