The negation of \( \sim S \vee ( \sim R \wedge S) \) \(\text{ is equivalent to}\)
Let A and B be sets. \[A \cap X = B \cap X = \varnothing \quad \text{and} \quad A \cup X = B \cup X \quad \text{for some set } X,\ \text{find the relation between } A \text{ and } B.\]