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 snows, then it is windy. It is snowing or it is cloudy. If it is cloudy, then Susan is a bartender. It is windy if and only if Susan is a bartender.
If it is windy, then Susan is a bartender can be inferred via the biconditional elimination rule. If Susan were a bartender, then it is windy can be inferred via the biconditional elimination rule.