[Morality Games]

The meanings of the terms 'knowledge' and 'belief' are too various for this to be a sensible question (this does not reflect poorly on you for asking it), even when narrowed down to the parameters of contemporary language, but they typically reference the existential status of information in relation to human beings:

'Knowledge' is information validated (shown true) by rigorous analysis and 'belief' is information that has yet to be validated by much besides the agent's confidence that it is the case (and therefore has not been shown to be true).

Thing is, information blocks are frequently mixtures of knowledge and belief, the degree of validation necessary for information to pass as knowledge is uncertain (because people adopt different standards), and people often refuse to acknowledge the standards used by other people as authentic. These three common complications make it easy to screw up the terminology so that the whole matter becomes incomprehensible.

So, at least as far as my understanding goes, the answer to your question, which comes first, knowledge or belief ... is 'either one', since people will process information that is both belief and knowledge, and probably not recognize the difference (information is information, knowledge or belief, fact or fiction, truth or lies).