What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x for which x will play tennis or x will not make tea. For all x, x is a poet if and only if x will play tennis. For all x, x is a poet or x will make tea.
There is at least one x for which if x makes tea, then x is playing tennis. For all x, if x were a poet, then x is playing tennis. For all x, if x plays tennis, then x is a poet.