メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.221205310534 34.7128841006176, 135.221058810966 34.7129663016713, 135.220766499174 34.7126844665362, 135.220964687388 34.7123314456076, 135.221055907174 34.7121842904519, 135.221807463033 34.7125348934618, 135.221785992706 34.7125688555436, 135.221205310534 34.7128841006176)) ^^http://www.opengis.net/ont/geosparql#wktLiteral