Consider the following premises. For all x_10, x_10 will drive a car or x_10 is a nurse. For all x_10, if x_10 were fast, then x_10 is an astronaut. There is at least one x_10 for which x_10 will not drive a car. For all x_10, if x_10 were a nurse, then x_10 is fast. Can we infer the following from them? For all x_10, x_10 is not an astronaut.
 From the fact that for all x_10, if x_10 were a nurse, then x_10 is fast, and that for all x_10, if x_10 were fast, then x_10 is an astronaut we can infer that for all x_10, if x_10 were a nurse, then x_10 is an astronaut. From the fact that for all x_10, x_10 will drive a car or x_10 is a nurse, and that there is at least one x_10 for which x_10 will not drive a car we can infer that there is at least one x_10 for which x_10 is a nurse. Finally, from the fact that for all x_10, if x_10 were a nurse, then x_10 is an astronaut, and that there is at least one x_10 for which x_10 is a nurse we can infer that there is at least one x_10 for which x_10 is an astronaut, which contradicts that For all x_10, x_10 is not an astronaut. Therefore, the answer is no.