What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_13, x_13 will play a game if and only if x_13 is a scientist. For all x_13, x_13 is not a bartender. There is at least one x_13 for which x_13 is a bartender if and only if x_13 will play a game. For all x_13, x_13 is a scientist if and only if x_13 is a server.
For all x_13, if x_13 plays a game, then x_13 is a scientist. For all x_13, if x_13 were a scientist, then x_13 is a server. There is at least one x_13 for which if x_13 were a bartender, then x_13 is playing a game. For all x_13, if x_13 were a scientist, then x_13 is playing a game. For all x_13, if x_13 were a server, then x_13 is a scientist. There is at least one x_13 for which if x_13 plays a game, then x_13 is a bartender. There is at least one x_13 for which x_13 will not play a game.