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