Answer:
Maryβs father has 5 daughters: Nana, Nene, Nini, Nono. What is the 5th daughter's name?
What can one catch that is not thrown?
You are my brother, but I am not your brother. Who am I?
What gets sharper the more you use it?
What goes up and down, but does not move?
What made Cyclops quit teaching?