The original riddle has a girls name. It's a common riddle so the LLM would recognize the pattern of the riddle and assumes the name is the answer.
But if it's good at reasoning it should understand that if the name is a Boys name then it is not the 5th daughter.
Now the last daughter can be called anything, but because there is a vowel pattern it should pick Lulu to solve the puzzle, but that is the wrong answer in the original puzzle.
But that makes no sense, if you ask me that John's dad has two daughters, Mary and ???, there's no way I will say "John" as an answer. I'll simply assume he also has at least one son.
