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 not snowing. It is late if and only if it is cold. Thomas is a politician if and only if it is late. Thomas is a politician if and only if it is snowing.
If it is late, then it is cold can be inferred via the biconditional elimination rule. If Thomas were a politician, then it is late can be inferred via the biconditional elimination rule. If Thomas were a politician, then it is snowing can be inferred via the biconditional elimination rule. If it is cold, then it is late can be inferred via the biconditional elimination rule. If it is late, then Thomas is a politician can be inferred via the biconditional elimination rule. If it snows, then Thomas is a politician can be inferred via the biconditional elimination rule. Thomas is not a politician can be inferred via the biconditional elimination rule.