# filename: ex190.rq

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

CONSTRUCT
{ ?p ab:hasAunt ?aunt . }
WHERE
{
  ?p ab:hasParent ?parent .
     ?parent ab:hasParent ?g .
     ?aunt ab:hasParent ?g ;
           ab:gender d:female .

  FILTER (?parent != ?aunt)  
}