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_5 for which if x_5 plays a game, then x_5 is curious. For all x_5, if x_5 were curious, then x_5 is playing a game. For all x_5, if x_5 plays a game, then x_5 is curious.
For all x_5, x_5 is curious if and only if x_5 will play a game. For all x_5, x_5 will play a game if and only if x_5 is curious. There is at least one x_5 for which x_5 will play a game if and only if x_5 is curious. There is at least one x_5 for which x_5 is curious if and only if x_5 will play a game.