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 Linda is taking a plane. Thomas is a soldier if and only if Linda is taking a plane. If Linda takes a plane, then it is raining.
It is raining if and only if Linda is taking a plane. Linda is taking a plane if and only if it is raining. If Thomas were a soldier, then Linda is taking a plane. If Linda takes a plane, then Thomas is a soldier.