Compounds of なのか

• 何なのか
  (exp) what is it (that)
  the meaning of something
  what something is about
  (P)
• 何なのか
  (exp) what is it (that)
  the meaning of something
  what something is about
  (P)
• ご存知なのか
  (exp) do you know
  perhaps you know
  I wonder if you know
• 御存知なのか
  (exp) do you know
  perhaps you know
  I wonder if you know