Consider the following premises. forall x_1: T(x_1) or W(x_1). forall x_1: T(x_1) -> Q_4(x_1). forall x_1: Q_4(x_1) or ~W(x_1). Can we infer Q_4(j) from them?
 From forall x_1: Q_4(x_1) or ~W(x_1) we can infer forall x_1: W(x_1) -> Q_4(x_1). From forall x_1: T(x_1) -> Q_4(x_1), forall x_1: W(x_1) -> Q_4(x_1), forall x_1: T(x_1) or W(x_1) we can infer forall x_1: Q_4(x_1). Finally, from forall x_1: Q_4(x_1) we can infer Q_4(j). Therefore, the answer is yes.