メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.921288006728 34.7553456045095, 137.92241055429 34.7557163131505, 137.922946034048 34.7558932273998, 137.923457302287 34.756061009176, 137.923813445475 34.7561779124117, 137.923493480675 34.7568126505306, 137.923146262993 34.7567005781414, 137.922620242579 34.7565307528416, 137.922079452201 34.7563562072721, 137.922067068797 34.7563823475138, 137.920953188543 34.756028153213, 137.920944403736 34.75604600046, 137.919666219779 34.7556370620715, 137.919471325949 34.7555747189644, 137.919497373892 34.7555166685864, 137.918979987907 34.7553344660669, 137.919310911197 34.7546858493673, 137.919839939424 34.754862331362, 137.921288006728 34.7553456045095)) ^^http://www.opengis.net/ont/geosparql#wktLiteral