Consider the following premises. forall x_13: W_3(x_13) <-> Q_13(x_13). w <-> Q_13(a_10). w or W_3(a_10). Can we infer Q_13(a_10) from them? If possible, name the inference rules being used at each step.
 From forall x_13: W_3(x_13) <-> Q_13(x_13) we can infer forall x_13: W_3(x_13) -> Q_13(x_13) via universal biconditional elimination. From forall x_13: W_3(x_13) -> Q_13(x_13) we can infer W_3(a_10) -> Q_13(a_10) via universal instantiation. From w <-> Q_13(a_10) we can infer w -> Q_13(a_10) via biconditional elimination. Finally, from w -> Q_13(a_10), W_3(a_10) -> Q_13(a_10), w or W_3(a_10) we can infer Q_13(a_10) via disjunction elimination. Therefore, the answer is yes.