query: SELECT T1.last_name FROM Owners AS T1 JOIN Dogs AS T2 ON T1.owner_id  =  T2.owner_id WHERE T2.age  =  ( SELECT max(age) FROM Dogs )
question: Who-who is owning a youngest dog? Are Giving me her or his last name.
query_toks: SELECT T1.last_name FROM Owners AS T1 JOIN Dogs AS T2 ON T1.owner_id = T2.owner_id WHERE T2.age = ( SELECT max ( age ) FROM Dogs )
query_toks_no_value: select t1 . last_name from owners as t1 join dogs as t2 on t1 . owner_id = t2 . owner_id where t2 . age = ( select max ( age ) from dogs )
question_toks: Who-who is owning a youngest dog? Are Giving me her or his last name.