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 were a janitor, then x_6 is not playing squash. For all x_6, x_6 is not a police officer. For all x_6, if x_6 were an office clerk, then x_6 is a janitor. For all x_6, x_6 is a police officer or x_6 will play squash.
For all x_6, x_6 will play squash.