What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_9, if x_9 were happy, then x_9 is not fast. There is at least one x_9 for which x_9 will play a game if and only if x_9 is happy. For all x_9, x_9 is a bartender. For all x_9, x_9 is fast.
For all x_9, x_9 is not happy. For all x_9, x_9 is a bartender and x_9 is fast. For all x_9, x_9 is fast and x_9 is a bartender. There is at least one x_9 for which if x_9 plays a game, then x_9 is happy. There is at least one x_9 for which if x_9 were happy, then x_9 is playing a game.