What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If it rains, then William is rich. Patricia is not a janitor. If it rains, then Patricia is a janitor. If Jessica goes running, then it is raining. If William were rich, then Jessica is running.
It is not raining. If it rains, then Jessica is running. If Jessica goes running, then William is rich. If Jessica goes running, then Patricia is a janitor. If William were rich, then it is raining.