# filename: ex185.rq

PREFIX ab: <http://learningsparql.com/ns/addressbook#> 

CONSTRUCT
{
  ?person ?p ?o ;
          ab:areaCode ?areaCode . 
}
WHERE
{
  ?person ab:homeTel ?phone ;
          ?p ?o . 
  BIND (SUBSTR(?phone,2,3) as ?areaCode)
}