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 Linda were a politician, then it is overcast. If Linda were a politician, then it is not cloudy. Linda is a politician if and only if it is overcast. It is cloudy.
Linda is not a politician can be inferred via the modus tollens rule. If Linda were a politician, then it is overcast can be inferred via the biconditional elimination rule. If it is overcast, then Linda is a politician can be inferred via the biconditional elimination rule.