メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.725186779862 45.3906168379861, 141.725698979495 45.3906813397526, 141.725721599755 45.3906842548935, 141.725732166031 45.3906854282881, 141.726373115938 45.3907669699834, 141.726252488917 45.3912595088821, 141.726871394868 45.3913249164843, 141.726501472778 45.3922025450701, 141.72619216235 45.3921648498929, 141.725422246679 45.39207104306, 141.72484658311 45.3920007642198, 141.724730287535 45.3919905282044, 141.724753260604 45.3917341756902, 141.724939828565 45.390585471524, 141.725186779862 45.3906168379861)) ^^http://www.opengis.net/ont/geosparql#wktLiteral