What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? James is excited if and only if Linda is rich. If James were excited, then it is sunny. Linda is not rich. If it is sunny, then James is excited.
James is excited if and only if it is sunny. It is sunny if and only if James is excited. If James were excited, then Linda is rich. If Linda were rich, then James is excited. James is not excited.