Consider the following premises. There is at least one x_12 for which x_12 is happy or x_12 is an astronaut. For all x_12, x_12 is an astronaut if and only if x_12 will work. For all x_12, if x_12 were happy, then x_12 is working. Can we infer the following from them? For all x_12, neither x_12 will work nor x_12 will sleep.
 From the fact that for all x_12, x_12 is an astronaut if and only if x_12 will work we can infer that for all x_12, if x_12 were an astronaut, then x_12 is working. From the fact that for all x_12, if x_12 were happy, then x_12 is working, that for all x_12, if x_12 were an astronaut, then x_12 is working, and that there is at least one x_12 for which x_12 is happy or x_12 is an astronaut we can infer that there is at least one x_12 for which x_12 will work. Finally, from the fact that there is at least one x_12 for which x_12 will work we can infer that there is at least one x_12 for which x_12 will work or x_12 will sleep, which contradicts that For all x_12, neither x_12 will work nor x_12 will sleep. Therefore, the answer is no.