メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.205644214322 42.9698250289979, 143.205656499997 42.9700681268584, 143.205753889691 42.9723080920106, 143.204946270672 42.9722497027296, 143.200646230266 42.9719368419462, 143.198769476335 42.9718027381043, 143.198922034112 42.9705235040684, 143.199055955704 42.9694157482977, 143.204047421976 42.9697258778773, 143.205644214322 42.9698250289979)) ^^http://www.opengis.net/ont/geosparql#wktLiteral