What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If Jessica were a taxi driver, then Linda is an office clerk. Linda is not an office clerk. Jessica is a taxi driver or it is raining. It is sunny if and only if it is raining.
Jessica is not a taxi driver. If it is sunny, then it is raining. If it rains, then it is sunny.