メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.853122518995 35.4142877054406, 136.852913672845 35.4159166974158, 136.85192784017 35.4158352223441, 136.850945320724 35.415748009534, 136.851170214478 35.4141167725033, 136.851370019625 35.4126131771214, 136.852375481485 35.4127364692, 136.853315552588 35.4128197955781, 136.853122518995 35.4142877054406)) ^^http://www.opengis.net/ont/geosparql#wktLiteral