メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.348900961986 43.0795627072886, 141.348825267091 43.0798503192196, 141.348760233034 43.0801043968, 141.348616280494 43.0806890313773, 141.347043985067 43.0804764688639, 141.34717998968 43.0799047126817, 141.347260597899 43.0796358485923, 141.347326185731 43.0793444316988, 141.348345460296 43.079483427184, 141.348900961986 43.0795627072886)) ^^http://www.opengis.net/ont/geosparql#wktLiteral