メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.930767225431 34.7333462400942, 137.931447272573 34.7333726426204, 137.93208998452 34.7333884451748, 137.93248619003 34.7333980305833, 137.933124891323 34.7335453692747, 137.933916383259 34.7337060894123, 137.93388233676 34.7341206158324, 137.933867636853 34.7344502945331, 137.933814424277 34.734929244299, 137.933789647128 34.7353480395749, 137.932824597335 34.7352897602292, 137.930894283272 34.7352050130274, 137.929907174839 34.7351728081064, 137.92993943705 34.7347602483935, 137.930101194896 34.733316095742, 137.930767225431 34.7333462400942)) ^^http://www.opengis.net/ont/geosparql#wktLiteral