メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.7690495023 43.2055951220269, 141.768942935477 43.2057170458107, 141.768645476811 43.2060473935535, 141.767724790364 43.2055992535633, 141.767766926745 43.2055591335568, 141.768024373573 43.2052801723334, 141.768042952094 43.2052590103023, 141.768270823355 43.2049995429936, 141.768696155879 43.2051944547081, 141.768651792933 43.2052425837844, 141.769024528955 43.2054082956418, 141.769060039753 43.2053730687254, 141.769200827536 43.2054418799866, 141.7690495023 43.2055951220269)) ^^http://www.opengis.net/ont/geosparql#wktLiteral