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_3 for which x_3 will cook or x_3 is a politician. For all x_3, if x_3 cooks, then x_3 is playing tennis. For all x_3, x_3 is a politician if and only if x_3 will play tennis.
For all x_3, if x_3 were a politician, then x_3 is playing tennis. For all x_3, if x_3 plays tennis, then x_3 is a politician.