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 will not play squash or x_11 is a writer. For all x_11, x_11 will climb a mountain. For all x_11, x_11 is not a janitor. For all x_11, x_11 will play squash or x_11 is a janitor.
For all x_11, x_11 is a janitor or x_11 is a writer.