メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.971772108212 35.2306011440978, 136.971800405866 35.2314803423312, 136.971796343184 35.2315366690188, 136.971697972732 35.2316110794855, 136.970373443851 35.2316236296172, 136.969764584978 35.2316089668281, 136.968492956292 35.231583558206, 136.967786061123 35.2315670339063, 136.96696899588 35.2315526451869, 136.96690640991 35.2315495824901, 136.966926362534 35.2315334910766, 136.968511306145 35.2302884912084, 136.968570252433 35.2294076798697, 136.96918978596 35.2294463056475, 136.970478296413 35.2295216567857, 136.971781462028 35.2295987083172, 136.971772108212 35.2306011440978)) ^^http://www.opengis.net/ont/geosparql#wktLiteral