メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.994547534832 34.9052330907176, 136.995144244786 34.9050482847536, 136.996121541939 34.9050383893308, 136.996088531244 34.9053481562642, 136.996055826829 34.9055100945465, 136.995849397882 34.9065970036427, 136.995683542591 34.9073330966338, 136.994361835634 34.9065199736439, 136.993349771949 34.9058949665041, 136.993399664401 34.9058498931132, 136.993479571957 34.9057351382282, 136.993710483074 34.9054554438303, 136.994547534832 34.9052330907176)) ^^http://www.opengis.net/ont/geosparql#wktLiteral