メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.916786188888 35.076742098115, 136.916779428136 35.076668418303, 136.915941252653 35.0767213539194, 136.915932326243 35.07623545928, 136.915931833922 35.0762212322444, 136.917646280275 35.0764355934745, 136.918327488 35.0765207871244, 136.91832353068 35.0766416324674, 136.916786188888 35.076742098115)) ^^http://www.opengis.net/ont/geosparql#wktLiteral