メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.749511256367 35.091368324567, 136.749165588502 35.091759771647, 136.747992905254 35.0910757769372, 136.748358754781 35.0906253833678, 136.748697836906 35.0909289606596, 136.749078524411 35.0911560539161, 136.749182529351 35.0911338734471, 136.749511256367 35.091368324567)) ^^http://www.opengis.net/ont/geosparql#wktLiteral