メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.624266032116 34.6504167991313, 135.623076042766 34.6504275006691, 135.623069426791 34.6503449352671, 135.623013356547 34.6474709162778, 135.624248906 34.6474393679886, 135.624266032116 34.6504167991313)) ^^http://www.opengis.net/ont/geosparql#wktLiteral