メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.770437576945 35.4344302279783, 136.769764647165 35.4344643418969, 136.769693954522 35.4344661192844, 136.769637705933 35.4339967309031, 136.769555705841 35.4340060059959, 136.769532960703 35.4338718883698, 136.769513658821 35.4336324352456, 136.769583980811 35.4336182971303, 136.769567348385 35.4334219489834, 136.769620118649 35.4334077546294, 136.769907067954 35.4333895336561, 136.770209482751 35.4333583347236, 136.770295032469 35.433344635026, 136.770437576945 35.4344302279783)) ^^http://www.opengis.net/ont/geosparql#wktLiteral