メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.325847336364 43.086030765816, 141.325195438194 43.085436839711, 141.325798483522 43.085086908586, 141.32636057914 43.0847606249505, 141.32671127964 43.0845563398089, 141.327096365854 43.0843687177825, 141.327156728095 43.0843361503375, 141.327104695103 43.0847982134962, 141.327080412727 43.0851118254829, 141.327088571144 43.0851692095779, 141.327144135393 43.0852709319425, 141.325847336364 43.086030765816)) ^^http://www.opengis.net/ont/geosparql#wktLiteral