メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.316242805445 43.0735125830599, 141.316253033191 43.0735213878041, 141.316708185372 43.0739230942319, 141.315851806039 43.0744269749159, 141.315291429569 43.0747566714758, 141.315042538099 43.0748978981462, 141.314667354984 43.0751110223453, 141.314257624402 43.0753436249934, 141.313919932078 43.0750219908121, 141.313626119949 43.0747421372376, 141.31349354288 43.0746157964626, 141.313876954045 43.0743915610196, 141.314270729491 43.0741606574094, 141.315077919085 43.0736873315458, 141.315892328114 43.0732115965406, 141.316242805445 43.0735125830599)) ^^http://www.opengis.net/ont/geosparql#wktLiteral