# filename: ex267.rq

PREFIX im: <http://learningsparql.com/ns/importedData#> 
PREFIX dm: <http://learningsparql.com/ns/demo#>
PREFIX u:  <http://learningsparql.com/ns/units#>

CONSTRUCT { ?s dm:amount ?newAmount . }
WHERE 
{
  ?s im:product ?prodName ;
     im:amount ?amount ; 
     im:units ?units .

  BIND (STRDT(?amount,
              URI(CONCAT("http://learningsparql.com/ns/units#",?units)))
        AS ?newAmount)
}