Consider the following premises. If Patricia were not a server, then Barbara is playing tennis. Patricia is not driving a car. For all x_14, if x_14 were a server, then x_14 is driving a car. Can we infer the following from them? Barbara is playing tennis.
 From the fact that for all x_14, if x_14 were a server, then x_14 is driving a car we can infer that if Patricia were a server, then Patricia is driving a car. From the fact that if Patricia were a server, then Patricia is driving a car, and that Patricia is not driving a car we can infer that Patricia is not a server. Finally, from the fact that if Patricia were not a server, then Barbara is playing tennis, and that Patricia is not a server we can infer that Barbara is playing tennis. Therefore, the answer is yes.