What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_11, x_11 is sad. For all x_11, x_11 is not a janitor. For all x_11, x_11 is a nurse or x_11 is a janitor. For all x_11, x_11 is not a nurse or x_11 is a soldier.
For all x_11, x_11 is a janitor or x_11 is a soldier.