メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.164322534242 34.2228799656633, 135.163487171535 34.2228116067978, 135.163528708374 34.2224340868783, 135.163462809533 34.2217129701316, 135.164160834661 34.2216834831166, 135.164237962499 34.2222463422083, 135.164272156775 34.2225022446684, 135.164322534242 34.2228799656633)) ^^http://www.opengis.net/ont/geosparql#wktLiteral