How does a question get stored? Does an answer replace a question? How do we find out that there's a chance to get a question answered?

One day amidst my course of studies, I wondered about how questions (i.e. question texts) and answers might get stored in mind. That curiousity was the first step to the later Model of Meaning, nowadays also known as Content Representation model. I wondered whether an answer might replace a question one day:

To mention context together with a question applies meaning to the question. When the question gets answered, the anwer might accompany that meaning. -- Well, wenn the question is answered thoroughly, I think, the answer might replace the question.

Does that mean, that in mind the question gets stored as a placeholder for any upcoming answer? How long does any such placeholder [if it is such a one] hold that place before it gets replace [if it gets replaced at all] by the/an answer?

Or does mind set up any data node that tells "lack of information"? And the question gets generated instantly? -- And if so, does that generation take place when there's indeed a chance to get the question answered? But what might be the trigger for finding out that there's a chance to get the question answered?