メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.924356545888 35.1844929085733, 136.924274502773 35.1850214694589, 136.923428869469 35.1852277165396, 136.92316754425 35.1848196560684, 136.923184352873 35.184806591878, 136.922942192839 35.1842942736836, 136.922729377267 35.1838158879455, 136.92319872982 35.1837181093506, 136.923701840909 35.1835898336515, 136.924386502387 35.1843000128441, 136.924356545888 35.1844929085733)) ^^http://www.opengis.net/ont/geosparql#wktLiteral