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 is windy, then David is cooking. If David cooks, then Jennifer is a poet. Robert is climbing a mountain if and only if it is windy.
If it is windy, then Jennifer is a poet can be inferred via the transitivity rule. If Robert climbs a mountain, then it is windy can be inferred via the biconditional elimination rule. If it is windy, then Robert is climbing a mountain can be inferred via the biconditional elimination rule.