メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.323150819555 43.0532576644197, 141.323791792358 43.0533493615771, 141.323698129648 43.0537990610193, 141.323585066153 43.0543015618439, 141.322885607898 43.0542082640136, 141.322597291285 43.0541698623078, 141.322223858527 43.0541201208805, 141.322335384232 43.0535800873668, 141.322365808836 43.0534327504567, 141.32243825511 43.0531567330334, 141.322666313321 43.0531883315291, 141.323109862774 43.0532517764211, 141.323150819555 43.0532576644197)) ^^http://www.opengis.net/ont/geosparql#wktLiteral