What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_3, x_3 will play a game if and only if x_3 will make tea. For all x_3, if x_3 were a cashier, then x_3 is making tea. For all x_3, x_3 will not play a game.
For all x_3, if x_3 plays a game, then x_3 is making tea. For all x_3, if x_3 makes tea, then x_3 is playing a game. For all x_3, x_3 will not make tea.