Consider the following premises. For all x_6, if x_6 were an astronaut, then x_6 is a soldier. There is at least one x_6 for which if x_6 were a nurse, then x_6 is playing tennis. For all x_6, if x_6 were a poet, then x_6 is a nurse. For all x_6, if x_6 plays tennis, then x_6 is a soldier. For all x_6, x_6 is an astronaut or x_6 is a poet. Can we infer the following from them? For all x_6, x_6 is not a soldier.
 From the fact that there is at least one x_6 for which if x_6 were a nurse, then x_6 is playing tennis, and that for all x_6, if x_6 plays tennis, then x_6 is a soldier we can infer that there is at least one x_6 for which if x_6 were a nurse, then x_6 is a soldier. From the fact that for all x_6, if x_6 were a poet, then x_6 is a nurse, and that there is at least one x_6 for which if x_6 were a nurse, then x_6 is a soldier we can infer that there is at least one x_6 for which if x_6 were a poet, then x_6 is a soldier. Finally, from the fact that for all x_6, if x_6 were an astronaut, then x_6 is a soldier, that there is at least one x_6 for which if x_6 were a poet, then x_6 is a soldier, and that for all x_6, x_6 is an astronaut or x_6 is a poet we can infer that there is at least one x_6 for which x_6 is a soldier, which contradicts that For all x_6, x_6 is not a soldier. Therefore, the answer is no.