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, x_6 is a janitor or x_6 is a soldier. For all x_6, if x_6 plays tennis, then x_6 is not working. For all x_6, if x_6 were a soldier, then x_6 is working. For all x_6, x_6 will work or x_6 is not a janitor.
For all x_6, if x_6 were a janitor, then x_6 is working.