What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: If it is cloudy, then Jennifer is a sailor. Jennifer is a sailor if and only if Robert is playing tennis.
If Jennifer were a sailor, then Robert is playing tennis can be inferred via the biconditional elimination rule. If Robert plays tennis, then Jennifer is a sailor can be inferred via the biconditional elimination rule.