Consider the following premises. forall x_14: ~R_14(x_14). R_14(b) <-> s. Can we infer ~s or r_2 from them?
 From forall x_14: ~R_14(x_14) we can infer ~R_14(b). From R_14(b) <-> s, ~R_14(b) we can infer ~s. Finally, from ~s we can infer ~s or r_2. Therefore, the answer is yes.