メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.118699560335 40.8623021002412, 141.118912223204 40.8622539394801, 141.119061434879 40.8623726173002, 141.119179955463 40.8624341689773, 141.119363699556 40.862486271802, 141.118831885239 40.8630412438572, 141.118668355238 40.8629550369759, 141.118102633895 40.8635371760665, 141.117946241327 40.8632526093616, 141.117840089651 40.8630667728911, 141.117600636428 40.862647602615, 141.117419792194 40.8623122964564, 141.118383550924 40.8621011618363, 141.118451049002 40.8621086643751, 141.118491602796 40.8621265056854, 141.118699560335 40.8623021002412)) ^^http://www.opengis.net/ont/geosparql#wktLiteral