What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x, x will not cook. There is at least one x for which x is a writer if and only if x is a bartender. For all x, x will cook if and only if x is a bartender. For all x, x is a writer or x is a taxi driver.
For all x, if x cooks, then x is a bartender. There is at least one x for which if x were a writer, then x is a bartender. For all x, if x were a bartender, then x is cooking. There is at least one x for which if x were a bartender, then x is a writer. For all x, x is not a bartender.