Consider the following premises. ~P_13(a_12). forall x_13: P_13(x_13). r. Can we infer Q_13(a_12) and r from them?
 From forall x_13: P_13(x_13) we can infer forall x_13: P_13(x_13) or Q_13(x_13). From forall x_13: P_13(x_13) or Q_13(x_13) we can infer P_13(a_12) or Q_13(a_12). From P_13(a_12) or Q_13(a_12), ~P_13(a_12) we can infer Q_13(a_12). Finally, from Q_13(a_12), r we can infer Q_13(a_12) and r. Therefore, the answer is yes. Notice, however, that the premises were contradictory, so we can infer anything from them.