メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.814027879199 35.3164899141967, 136.812960158771 35.3176664073603, 136.812222164805 35.3184896929751, 136.812169951543 35.3183443272074, 136.811989863087 35.3178770834076, 136.811793973713 35.3173688365093, 136.811626354268 35.316890306508, 136.812592693964 35.3166476349075, 136.814118011445 35.3162286917204, 136.814171396988 35.3163215950662, 136.814027879199 35.3164899141967)) ^^http://www.opengis.net/ont/geosparql#wktLiteral