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