What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If Joseph listens to a song, then it is raining. Elisabeth is a taxi driver or it is not raining. If Joseph goes running, then Joseph is listening to a song. If Elisabeth were a taxi driver, then Joseph is running.
If Joseph goes running, then it is raining. If Elisabeth were a taxi driver, then Joseph is listening to a song. If it rains, then Elisabeth is a taxi driver.