メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.707729261348 35.363614531851, 136.706554579853 35.3637698182566, 136.705684666434 35.3638764772321, 136.7055115601 35.3615826821694, 136.705474436945 35.3610907131401, 136.707547836565 35.3609815573431, 136.707585369734 35.361517963706, 136.709654474504 35.3613857967337, 136.709659811773 35.3614615913633, 136.709806984496 35.3633566900889, 136.707729261348 35.363614531851)) ^^http://www.opengis.net/ont/geosparql#wktLiteral