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 sunny or Mary is curious. If it is sunny, then it is windy. Mary is curious if and only if it is windy. Susan is listening to a song.
If Mary were curious, then it is windy can be inferred via the biconditional elimination rule. If it is windy, then Mary is curious can be inferred via the biconditional elimination rule.