Consider the following premises. forall x_16: T_3(x_16) -> S_16(x_16). ~S_16(a_16). u. Can we infer ~T_3(a_16) from them?
 From forall x_16: T_3(x_16) -> S_16(x_16) we can infer T_3(a_16) -> S_16(a_16). Finally, from T_3(a_16) -> S_16(a_16), ~S_16(a_16) we can infer ~T_3(a_16). Therefore, the answer is yes.