メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.44184620892 43.7762233190843, 142.441854832084 43.7763353631238, 142.441883046287 43.7766643335766, 142.442045229303 43.7782197203616, 142.43965628019 43.7783311205232, 142.438524064067 43.7783838999782, 142.438408001355 43.7773492658491, 142.438390483888 43.7771931622227, 142.438389671498 43.7771853577024, 142.438306637445 43.7763854235449, 142.438271010629 43.7760421692235, 142.438253486786 43.7758760102554, 142.439608930397 43.7757960327654, 142.440917807346 43.7757337497749, 142.441771931782 43.7756908436315, 142.441802813704 43.7759975885383, 142.44184620892 43.7762233190843)) ^^http://www.opengis.net/ont/geosparql#wktLiteral