メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.339758225019 43.7728832412115, 142.339781412338 43.7729323248837, 142.339708175591 43.7732915682625, 142.337922276822 43.7726381639278, 142.338311627338 43.7722902938083, 142.33926066887 43.7720074839896, 142.339545145515 43.7725028487024, 142.339758225019 43.7728832412115)) ^^http://www.opengis.net/ont/geosparql#wktLiteral