メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.243678582738 43.119950160097, 141.244221638774 43.1200768829162, 141.242904382435 43.1208921599019, 141.242841734624 43.1209244510828, 141.242018200928 43.1213493030733, 141.241655061924 43.1212108630434, 141.242117107634 43.120862935842, 141.242275032712 43.1205827290501, 141.242443195604 43.1201642058605, 141.242635366297 43.1197042580405, 141.243556263903 43.1199153269604, 141.243678582738 43.119950160097)) ^^http://www.opengis.net/ont/geosparql#wktLiteral