メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.348802290933 43.077170533627, 141.349462900172 43.0772644957595, 141.349325394657 43.0778488309056, 141.349196246609 43.0784191658984, 141.348569414188 43.0783306032115, 141.348133114008 43.0782689299413, 141.34763248951 43.078203652304, 141.347776758746 43.0776302737485, 141.347915691422 43.077060718654, 141.348686797649 43.0771562602331, 141.348802290933 43.077170533627)) ^^http://www.opengis.net/ont/geosparql#wktLiteral