メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.634225638007 35.3604819996255, 136.632961037384 35.3604086721381, 136.633004794407 35.3599771753612, 136.634257102491 35.3600494618548, 136.634225638007 35.3604819996255)) ^^http://www.opengis.net/ont/geosparql#wktLiteral