メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.213354191737 34.8248594266192, 137.212888071078 34.8249411035926, 137.212150319995 34.8250878948015, 137.21198619934 34.824761167276, 137.21186300423 34.8242991986021, 137.211862878059 34.8240400179123, 137.211917415548 34.8238033528146, 137.212039746591 34.8238318272308, 137.21254599416 34.8239495933434, 137.212887608031 34.8240170669653, 137.213289118089 34.8240765557434, 137.213252497891 34.8242654638406, 137.213393295771 34.8243098472155, 137.213354002932 34.8244874867993, 137.213354191737 34.8248594266192)) ^^http://www.opengis.net/ont/geosparql#wktLiteral