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: It is snowing if and only if it is windy. It is not windy. It is snowing or Joseph is running.
If it snows, then it is windy can be inferred via the biconditional elimination rule. If it is windy, then it is snowing can be inferred via the biconditional elimination rule. It is not snowing can be inferred via the biconditional elimination rule.