Consider the following premises. forall x_6: R(x_6) -> T(x_6). forall x_6: R(x_6). exists x_6: W(x_6) <-> T(x_6). Can we infer exists x_6: T(x_6) from them?
 From forall x_6: R(x_6) we can infer forall x_6: R(x_6) or W(x_6). From exists x_6: W(x_6) <-> T(x_6) we can infer exists x_6: W(x_6) -> T(x_6). Finally, from forall x_6: R(x_6) -> T(x_6), exists x_6: W(x_6) -> T(x_6), forall x_6: R(x_6) or W(x_6) we can infer exists x_6: T(x_6). Therefore, the answer is yes.