Consider the following premises. forall x_13: ~R_13(x_13) or R(x_13). exists x_13: P_10(x_13) -> R_13(x_13). forall x_13: P_10(x_13) or P_13(x_13). forall x_13: P_13(x_13) -> Q_13(x_13). forall x_13: Q_13(x_13) -> R_13(x_13). Can we infer exists x_13: P_10(x_13) -> R_13(x_13) from them? If possible, name the inference rules being used at each step.
That is one of the premises. Therefore, the answer is yes.