メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.836433773883 35.3809491880492, 136.836428421598 35.3809491735378, 136.835963748737 35.3809498840884, 136.835966004963 35.3791922149919, 136.835951015601 35.3789150022989, 136.836037066806 35.3788932654695, 136.840112130727 35.3787220384392, 136.840310510121 35.3797253354489, 136.839498463488 35.3798957509421, 136.839587939095 35.3799259194385, 136.840098955214 35.3799299680986, 136.840092059786 35.3809080673082, 136.83885043451 35.3809142387648, 136.836433773883 35.3809491880492)) ^^http://www.opengis.net/ont/geosparql#wktLiteral