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 cooks, then x is making tea. There is at least one x for which x will make tea if and only if x will cook.
There is at least one x for which if x makes tea, then x is cooking. There is at least one x for which if x cooks, then x is making tea.