# filename: ex047.rq

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

SELECT ?doctorFirst ?doctorLast ?spouseFirst ?spouseLast
WHERE 
{
   ?s ab:firstName "Cindy" ;
      ab:lastName "Marshall" ;
      ab:doctor ?doctor ;
      ab:spouse ?spouse .  

?doctor ab:firstName ?doctorFirst ;
        ab:lastName ?doctorLast .

?spouse ab:firstName ?spouseFirst ;
        ab:lastName ?spouseLast .
}