Consider the following premises. p_17 <-> R(h). p_1 <-> q_7. ~p_1. forall z: ~R(z). Can we infer p_17 from them? If possible, name the inference rules being used at each step.
 From forall z: ~R(z) we can infer ~R(h) via universal instantiation. Finally, from p_17 <-> R(h), ~R(h) we can infer ~p_17 via biconditional elimination, which contradicts p_17. Therefore, the answer is no.