メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.927402506658 35.1414142703393, 136.927356735558 35.1418720116906, 136.927127716237 35.1418559170796, 136.926370196888 35.1418025595614, 136.926406232268 35.1413551520741, 136.926441020872 35.1409166157993, 136.927443016789 35.1409739846731, 136.927402506658 35.1414142703393)) ^^http://www.opengis.net/ont/geosparql#wktLiteral