メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.315552729626 42.2841626420067, 143.31615606801 42.2844170092757, 143.315689450078 42.2850581798247, 143.315641297954 42.2851239002191, 143.315024018154 42.2848574206352, 143.31494901552 42.284824916936, 143.314345098575 42.2845642185131, 143.314402357884 42.2844880037765, 143.314866493602 42.2838733092696, 143.315469349123 42.2841275433335, 143.315552729626 42.2841626420067)) ^^http://www.opengis.net/ont/geosparql#wktLiteral