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: Michael is not a poet. Michael is a poet if and only if it is snowing. It is snowing or Susan is reading a book.
If Michael were a poet, then it is snowing can be inferred via the biconditional elimination rule. If it snows, then Michael is a poet can be inferred via the biconditional elimination rule. It is not snowing can be inferred via the biconditional elimination rule.