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