メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.417595582418 43.7524093728362, 142.417593312106 43.7523868733623, 142.419260455594 43.7523038526105, 142.419293519928 43.752436518342, 142.419289833663 43.7525177792851, 142.419327553292 43.752910471019, 142.419367841658 43.7532848757347, 142.417944102369 43.7533667536077, 142.417687529787 43.7533988072303, 142.416876601479 43.7534179668721, 142.415350707822 43.7535011211769, 142.415289280359 43.7530103809286, 142.415255171163 43.7525196015056, 142.417595582418 43.7524093728362)) ^^http://www.opengis.net/ont/geosparql#wktLiteral