Consider the following premises. If it is windy, then Susan is taking a plane. For all x_12, x_12 is an astronaut or x_12 is a nurse. If Richard were a nurse, then it is windy. If Richard were an astronaut, then it is windy. Can we infer the following from them? If we can, name the inference rule being used: Susan is taking a plane.
 From the fact that for all x_12, x_12 is an astronaut or x_12 is a nurse we can infer that Richard is an astronaut or Richard is a nurse via universal instantiation. From the fact that if Richard were an astronaut, then it is windy, that if Richard were a nurse, then it is windy, and that Richard is an astronaut or Richard is a nurse we can infer that it is windy via disjunction elimination. Finally, from the fact that if it is windy, then Susan is taking a plane, and that it is windy we can infer that Susan is taking a plane via modus ponens. Therefore, the answer is yes.