What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: t <-> q_2. forall x_10: ~R_10(x_10). q_2 <-> R_10(a_10).
t -> q_2 can be inferred via the biconditional elimination rule. q_2 -> R_10(a_10) can be inferred via the biconditional elimination rule. q_2 -> t can be inferred via the biconditional elimination rule. R_10(a_10) -> q_2 can be inferred via the biconditional elimination rule.