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: q_4 or R_10(f). forall x_10: R_10(x_10) -> S_10(x_10). S_10(f) <-> q_4.
R_1(f) -> q_4 can be inferred via the rewriting rule. S_10(f) -> q_4 can be inferred via the biconditional elimination rule. q_4 -> S_10(f) can be inferred via the biconditional elimination rule.