メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.931017146746 35.0896247537916, 136.931264563364 35.0897098885423, 136.930668114814 35.09081359518, 136.930419084563 35.0907225404299, 136.929137654461 35.0902745092658, 136.929330693427 35.0898514773957, 136.929692402942 35.0891373472689, 136.931017146746 35.0896247537916)) ^^http://www.opengis.net/ont/geosparql#wktLiteral