Answer:
Maryβs father has 5 daughters: Nana, Nene, Nini, Nono. What is the 5th daughter's name?
You hear me speak, for I have a hard tongue. But I cannot breathe, for I have not a lung. What am I?
Better touch me before you proceed to second.
Use me if you really want to see inside someone
What is always in front of you but can't be seen?
The answer I give is yes, but what I mean is no. What was the question?