Consider the following premises. For all x_15, if x_15 were a politician, then x_15 is running. If Karen writes a letter, then Mary is running. Karen is writing a letter or Mary is fast. For all x_15, if x_15 were fast, then x_15 is a politician. Can we infer the following from them? Mary is running or Elisabeth is driving a car.
 From the fact that for all x_15, if x_15 were fast, then x_15 is a politician, and that for all x_15, if x_15 were a politician, then x_15 is running we can infer that for all x_15, if x_15 were fast, then x_15 is running. From the fact that for all x_15, if x_15 were fast, then x_15 is running we can infer that if Mary were fast, then Mary is running. From the fact that if Karen writes a letter, then Mary is running, that if Mary were fast, then Mary is running, and that Karen is writing a letter or Mary is fast we can infer that Mary is running. Finally, from the fact that Mary is running we can infer that Mary is running or Elisabeth is driving a car. Therefore, the answer is yes.