Consider the following premises. forall x_14: R_2(x_14) <-> S_14(x_14). S_14(a_14) -> ~t_1. R_2(a_14) -> w. w -> R_2(a_14). t_1. Can we infer w from them?
 From forall x_14: R_2(x_14) <-> S_14(x_14) we can infer R_2(a_14) <-> S_14(a_14). From S_14(a_14) -> ~t_1, t_1 we can infer ~S_14(a_14). From R_2(a_14) -> w, w -> R_2(a_14) we can infer R_2(a_14) <-> w. From R_2(a_14) <-> S_14(a_14), ~S_14(a_14) we can infer ~R_2(a_14). Finally, from R_2(a_14) <-> w, ~R_2(a_14) we can infer ~w, which contradicts w. Therefore, the answer is no.