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 Sarah were curious, then it is windy. If it is windy, then Sarah is curious. Joseph is a server or Sarah is curious. It is not windy.
Sarah is not curious can be inferred via the modus tollens rule. If Sarah were not curious, then Joseph is a server can be inferred via the rewriting rule. Sarah is curious if and only if it is windy can be inferred via the biconditional introduction rule. It is windy if and only if Sarah is curious can be inferred via the biconditional introduction rule.