メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.753798785753 35.3797472342918, 136.752401694066 35.3798180135183, 136.750998961115 35.3798822785629, 136.750557151132 35.3799031737786, 136.748818508879 35.3799857782355, 136.747570621847 35.3800430658568, 136.747441223689 35.3779646809029, 136.750424687972 35.3778217387235, 136.750962553449 35.3777960262179, 136.752258919011 35.3777350571262, 136.753316776744 35.3776810174793, 136.753393852605 35.3780193079496, 136.753798785753 35.3797472342918)) ^^http://www.opengis.net/ont/geosparql#wktLiteral