What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_6, if x_6 goes running, then x_6 is playing squash. For all x_6, if x_6 works, then x_6 is an astronaut. For all x_6, if x_6 plays squash, then x_6 is running. For all x_6, x_6 will go running if and only if x_6 will work. For all x_6, x_6 is not an astronaut.
For all x_6, x_6 will not work. For all x_6, x_6 will go running if and only if x_6 will play squash. For all x_6, x_6 will play squash if and only if x_6 will go running. For all x_6, if x_6 goes running, then x_6 is working. For all x_6, if x_6 works, then x_6 is running.