メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.056594692385 34.8622737949574, 137.05594410679 34.8626054871569, 137.05586551688 34.8625113930918, 137.055719179077 34.8623234256484, 137.055553882622 34.862112904405, 137.055431940247 34.8619561593914, 137.055207061568 34.8616404326932, 137.055607719829 34.8614428257326, 137.055137591243 34.8608147392364, 137.055222049046 34.8605956440969, 137.055260503693 34.8604896137772, 137.055499856722 34.8608100704813, 137.055828818405 34.8612349819084, 137.056594692385 34.8622737949574)) ^^http://www.opengis.net/ont/geosparql#wktLiteral