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, if x_13 were fast, then x_13 is playing a game. For all x_13, x_13 is fast or x_13 is poor. For all x_13, x_13 will play a game if and only if x_13 is poor. For all x_13, if x_13 plays a game, then x_13 is poor. There is at least one x_13 for which x_13 will play tennis.
For all x_13, if x_13 were fast, then x_13 is poor. For all x_13, if x_13 plays a game, then x_13 is poor. For all x_13, if x_13 were poor, then x_13 is playing a game.