What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If Joseph were a lawyer, then it is cold. Jessica is a politician if and only if Joseph is a lawyer. It is not snowing. If Jessica were a politician, then it is snowing. If it is cold, then Joseph is a lawyer.
Jessica is not a politician. Joseph is a lawyer if and only if it is cold. It is cold if and only if Joseph is a lawyer. If Jessica were a politician, then Joseph is a lawyer. If Joseph were a lawyer, then Jessica is a politician.