メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.352658680113 44.476591214183, 142.351891070694 44.4764006164594, 142.351943137394 44.4762909515645, 142.352477607892 44.4751524795288, 142.353297536651 44.4753516030107, 142.352930736684 44.4760047273344, 142.352713837308 44.476479821727, 142.352658680113 44.476591214183)) ^^http://www.opengis.net/ont/geosparql#wktLiteral