メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.006922445526 34.9013508500493, 137.006463584802 34.9015039906269, 137.006299532739 34.9013092528901, 137.005488801379 34.9002790231891, 137.005956271429 34.9000268764566, 137.00628746032 34.9004693881506, 137.006796358182 34.901140458283, 137.006922445526 34.9013508500493)) ^^http://www.opengis.net/ont/geosparql#wktLiteral