メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.768439865818 43.1439109367955, 140.767714455727 43.1444594503781, 140.766362078995 43.1454914228587, 140.765067212764 43.146482771535, 140.76421126649 43.1471282387194, 140.763249760718 43.147888016276, 140.76318215542 43.1478320007866, 140.760795373543 43.1458649060341, 140.765329447241 43.1423629965526, 140.765357871146 43.1422122728397, 140.765388836483 43.142048065648, 140.765728237327 43.1415600350436, 140.76621973042 43.1412002125465, 140.767358332628 43.1421390111787, 140.767582554508 43.142553545755, 140.7683785527 43.1438211071648, 140.768439865818 43.1439109367955)) ^^http://www.opengis.net/ont/geosparql#wktLiteral