メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.597921701948 35.3912643794872, 136.596918516516 35.3913092915202, 136.59690336625 35.3910412754483, 136.596844595398 35.3900022473931, 136.596933829188 35.3899442935517, 136.597029835462 35.3898833431568, 136.597207752565 35.3897793294012, 136.59864927393 35.3909733826074, 136.59896283824 35.3911914669588, 136.597921701948 35.3912643794872)) ^^http://www.opengis.net/ont/geosparql#wktLiteral