メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.405022203591 43.771754802865, 142.405066557966 43.7722429738653, 142.403651404742 43.7723154524121, 142.403015111803 43.7723522324251, 142.402395343196 43.7723859986545, 142.401783833713 43.7724137549159, 142.401056641877 43.7724536318818, 142.400971880426 43.7714714450889, 142.401679187999 43.7714400342201, 142.402291407108 43.771409058602, 142.402310364077 43.7714080137465, 142.402909127824 43.7713750497831, 142.403536578643 43.7713478458328, 142.40429586983 43.7713007017658, 142.404977875351 43.7712668424096, 142.405022203591 43.771754802865)) ^^http://www.opengis.net/ont/geosparql#wktLiteral