# filename: ex192.rq

PREFIX ab:  <http://learningsparql.com/ns/addressbook#>
PREFIX d:   <http://learningsparql.com/ns/data#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 

CONSTRUCT
{ 
  ?aunt rdf:type ab:Aunt . 
  ?p ab:hasAunt ?aunt . 
}

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

FILTER (?parent != ?aunt)  
}