[Suzerain of Sheol]

Clearly these riddles are far too simple.

I propose the following:

You are about to enter a chamber inhabited by three omniscient gods, Past, Present, and Future. You do not know which god is which, and while they understand all languages, they answer only in their own (and will only answer Yes/No question), with either Da or Ja. You do not know which word means Yes and which means No.

Before you enter, you must formulate three questions, one asked to each god, in order to determine the identity of all three. When a question is asked, all three gods will answer: Past will answer the previous question asked, Present will answer the current question, and Future will answer the question you are about to ask. Dynamic questions are not allowed as they could potentially tear apart the space-time continuum with a paradox.

What three questions will allow you to successfully determine the identities of the three gods?

This is not a sanctioned contest riddle. :P