What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x_11 for which x_11 will drive a car or x_11 is a janitor. For all x_11, if x_11 makes tea, then x_11 is not playing squash. For all x_11, x_11 will not drive a car or x_11 will play squash. For all x_11, x_11 is not a janitor.
There is at least one x_11 for which x_11 is a janitor or x_11 will play squash.