# filename: ex143.rq

PREFIX e: <http://learningsparql.com/ns/expenses#> 

SELECT ?mealCode ?amount 
WHERE
{
  {
    SELECT ?meal (UCASE(SUBSTR(?description,1,3)) as ?mealCode)
    WHERE { ?meal e:description ?description . }
  }

  {
    SELECT ?meal ?amount
    WHERE { ?meal e:amount ?amount . }
  }
}