Consider the following premises. ~t_1. forall z: S_3(z). ~q -> r. q <-> t_1. Can we infer S_3(a_9) and r from them?
 From q <-> t_1, ~t_1 we can infer ~q. From ~q -> r, ~q we can infer r. From forall z: S_3(z) we can infer S_3(a_9). Finally, from S_3(a_9), r we can infer S_3(a_9) and r. Therefore, the answer is yes.