Consider the following premises. If it rains, then it is windy. For all x_14, x_14 is not an office clerk. If it is windy, then David is an office clerk. Can we infer the following from them? If we can, name the inference rule being used: It is not raining.
 From the fact that for all x_14, x_14 is not an office clerk we can infer that David is not an office clerk via universal instantiation. From the fact that if it is windy, then David is an office clerk, and that David is not an office clerk we can infer that it is not windy via modus tollens. Finally, from the fact that if it rains, then it is windy, and that it is not windy we can infer that it is not raining via modus tollens. Therefore, the answer is yes.