メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.774270610388 35.4162343801349, 136.774288795004 35.4164760475039, 136.774266987899 35.4164759770637, 136.773076933715 35.4165196968406, 136.772091079397 35.4165588196735, 136.772093228325 35.4166211482674, 136.771808213013 35.4166162112278, 136.771820920799 35.4162765125014, 136.771817797759 35.4159106380763, 136.772100359672 35.4159155673485, 136.772097556476 35.4159879499686, 136.773039618304 35.4160020264203, 136.774250493251 35.4160093593237, 136.774270610388 35.4162343801349)) ^^http://www.opengis.net/ont/geosparql#wktLiteral