Consider the following premises. For all x_13, x_13 is not bored. There is at least one x_13 for which x_13 will play tennis if and only if x_13 is fast. For all x_13, if x_13 drives a car, then x_13 is bored. For all x_13, x_13 will drive a car if and only if x_13 will play tennis. Can we infer the following from them? For all x_13, x_13 is fast.
 From the fact that there is at least one x_13 for which x_13 will play tennis if and only if x_13 is fast we can infer that there is at least one x_13 for which if x_13 were fast, then x_13 is playing tennis. From the fact that for all x_13, if x_13 drives a car, then x_13 is bored, and that for all x_13, x_13 is not bored we can infer that for all x_13, x_13 will not drive a car. From the fact that for all x_13, x_13 will drive a car if and only if x_13 will play tennis, and that for all x_13, x_13 will not drive a car we can infer that for all x_13, x_13 will not play tennis. Finally, from the fact that there is at least one x_13 for which if x_13 were fast, then x_13 is playing tennis, and that for all x_13, x_13 will not play tennis we can infer that there is at least one x_13 for which x_13 is not fast, which contradicts that For all x_13, x_13 is fast. Therefore, the answer is no.