Consider the following premises. s <-> p_1. s -> ~S_17(a_17). ~R_17(a_17). forall x_17: R_17(x_17) or S_17(x_17). Can we infer ~p_1 from them?
 From forall x_17: R_17(x_17) or S_17(x_17) we can infer R_17(a_17) or S_17(a_17). From R_17(a_17) or S_17(a_17), ~R_17(a_17) we can infer S_17(a_17). From s -> ~S_17(a_17), S_17(a_17) we can infer ~s. Finally, from s <-> p_1, ~s we can infer ~p_1. Therefore, the answer is yes.