メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.896330442913 35.2489989022067, 136.898176586408 35.2489869483392, 136.89864070402 35.2489848718507, 136.898647939124 35.2495129932697, 136.898654534148 35.2499950569365, 136.898661285384 35.2509721973143, 136.898667786545 35.2519145484488, 136.897397614735 35.2518873161042, 136.895212948029 35.2518162116668, 136.895213835256 35.2517694524741, 136.895211810408 35.2511093681291, 136.895194243385 35.2500045244755, 136.895170270816 35.2489794563844, 136.896204126639 35.2489967863981, 136.896330442913 35.2489989022067)) ^^http://www.opengis.net/ont/geosparql#wktLiteral