メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.301929017126 43.0753467741609, 141.302165781952 43.0752039990412, 141.302667515848 43.0756593140848, 141.30320814053 43.0761501127186, 141.302195500832 43.0767428305863, 141.302191822817 43.076744910211, 141.301225663061 43.0773084649096, 141.300932210772 43.0770378318271, 141.300786659435 43.0769035977974, 141.300702471937 43.0768260304746, 141.300384550509 43.0765328632697, 141.30021570744 43.0763770903332, 141.300763051741 43.0760463745075, 141.301169621841 43.0758046501684, 141.301488118692 43.0756130093504, 141.301558184575 43.075570850886, 141.301747244761 43.0754570910657, 141.301929017126 43.0753467741609)) ^^http://www.opengis.net/ont/geosparql#wktLiteral