メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.279415047928 43.1084804768389, 141.278061265714 43.1093242572098, 141.277648537659 43.1089404872992, 141.277175051531 43.1085447347329, 141.276422178157 43.1078867419932, 141.276192020148 43.1076856144369, 141.275958137168 43.1074774223551, 141.279518616817 43.1051403264503, 141.280484742566 43.1059579929589, 141.281752474424 43.1070194992559, 141.280542867433 43.1077814721658, 141.279415047928 43.1084804768389)) ^^http://www.opengis.net/ont/geosparql#wktLiteral