Consider the following premises. r. forall x_15: Q_12(x_15). forall x_15: Q_3(x_15) and Q_15(x_15). Can we infer r and Q_3(h_2) from them? If possible, name the inference rules being used at each step.
 From forall x_15: Q_3(x_15) and Q_15(x_15) we can infer forall x_15: Q_3(x_15) via universal simplification. From forall x_15: Q_3(x_15), forall x_15: Q_12(x_15) we can infer forall x_15: Q_3(x_15) and Q_12(x_15) via universal conjunction. From forall x_15: Q_3(x_15) and Q_12(x_15) we can infer Q_3(h_2) and Q_12(h_2) via universal instantiation. From Q_3(h_2) and Q_12(h_2) we can infer Q_3(h_2) via simplification. Finally, from r, Q_3(h_2) we can infer r and Q_3(h_2) via conjunction. Therefore, the answer is yes.