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: forall z: W(z) -> R_2(z). q -> R_2(d_2). forall z: R_2(z) -> W(z). q or W(d_2).
R_1(d_2) -> q can be inferred via the rewriting rule. forall z: W(z) <-> R_2(z) can be inferred via the universal biconditional introduction rule. forall z: R_2(z) <-> W(z) can be inferred via the universal biconditional introduction rule.