What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_15, x_15 will make tea or x_15 will cook. For all x_15, if x_15 cooks, then x_15 is playing a game. For all x_15, x_15 is a janitor if and only if x_15 is a poet. For all x_15, if x_15 plays tennis, then x_15 is playing a game. For all x_15, if x_15 plays a game, then x_15 is a janitor. For all x_15, if x_15 makes tea, then x_15 is playing tennis.
For all x_15, if x_15 cooks, then x_15 is a janitor. For all x_15, if x_15 plays tennis, then x_15 is a janitor. For all x_15, if x_15 makes tea, then x_15 is playing a game. For all x_15, if x_15 were a janitor, then x_15 is a poet. For all x_15, if x_15 were a poet, then x_15 is a janitor.