Consider the following premises. For all x_2, x_2 is not an office clerk. For all x_2, x_2 is a bartender or x_2 is an office clerk. For all x_2, x_2 is not a bartender or x_2 is an astronaut. Can we infer the following from them? There is at least one x_2 for which x_2 is not an astronaut.
 From the fact that for all x_2, x_2 is a bartender or x_2 is an office clerk, and that for all x_2, x_2 is not a bartender or x_2 is an astronaut we can infer that for all x_2, x_2 is an office clerk or x_2 is an astronaut. Finally, from the fact that for all x_2, x_2 is an office clerk or x_2 is an astronaut, and that for all x_2, x_2 is not an office clerk we can infer that for all x_2, x_2 is an astronaut, which contradicts that There is at least one x_2 for which x_2 is not an astronaut. Therefore, the answer is no.