メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.737717919337 35.4047920160267, 136.737722518004 35.4055159577262, 136.737742030794 35.4065831123824, 136.737058307063 35.4062135843404, 136.736870241127 35.4060927781463, 136.735594224015 35.4051310115015, 136.735680441059 35.4046955557552, 136.735738528867 35.4044144313234, 136.735809764086 35.4040303992363, 136.735747341899 35.4039375038509, 136.735852075256 35.4039585093276, 136.736128808665 35.4039663254564, 136.736292259808 35.4039840888728, 136.737709120076 35.4040817207636, 136.737717919337 35.4047920160267)) ^^http://www.opengis.net/ont/geosparql#wktLiteral