Consider the following premises. There is at least one x_10 for which if x_10 were an astronaut, then x_10 is driving a car. For all x_10, if x_10 drives a car, then x_10 is sad. For all x_10, if x_10 drives a car, then x_10 is an astronaut. For all x_10, if x_10 were sad, then x_10 is an astronaut. Can we infer the following from them? If we can, name the inference rule being used: There is at least one x_10 for which if x_10 were an astronaut, then x_10 is driving a car.
That is one of the premises. Therefore, the answer is yes.