Consider the following premises. forall x_14: U(x_14) and S_14(x_14). ~U(a_14). Can we infer t_2 from them?
 From forall x_14: U(x_14) and S_14(x_14) we can infer U(a_14) and S_14(a_14). From U(a_14) and S_14(a_14) we can infer U(a_14). From U(a_14) we can infer U(a_14) or t_2. Finally, from U(a_14) or t_2, ~U(a_14) we can infer t_2. Therefore, the answer is yes. Notice, however, that the premises were contradictory, so we can infer anything from them.