メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.406006553694 44.1813645281877, 142.40497823381 44.182262981203, 142.404714091411 44.1829547217499, 142.404541397221 44.1829284990499, 142.405055504469 44.1812084522593, 142.405017381416 44.181202192749, 142.405161329789 44.1807100484915, 142.405161900006 44.1807081144186, 142.406015832405 44.1808473578543, 142.406334306236 44.1809341668075, 142.406475692723 44.1810017237836, 142.406006553694 44.1813645281877)) ^^http://www.opengis.net/ont/geosparql#wktLiteral