メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.604601314267 37.8514971707463, 140.604814190524 37.8518540879434, 140.604046429503 37.8521339196897, 140.604176564705 37.8523884617934, 140.604370100405 37.8527719733766, 140.604070462457 37.8529072566123, 140.603796448693 37.8530309662186, 140.603545849599 37.8526492336218, 140.602928762677 37.8525133100451, 140.602568833667 37.8526305376318, 140.602405313607 37.8522385210299, 140.602355559636 37.8521663395926, 140.602166390574 37.8515866777019, 140.604267008353 37.8509029711016, 140.604601314267 37.8514971707463)) ^^http://www.opengis.net/ont/geosparql#wktLiteral