What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_7, x_7 will take a plane if and only if x_7 will play a game. If Karen climbs a mountain, then Thomas is taking a plane. Thomas is not playing a game.
For all x_7, if x_7 takes a plane, then x_7 is playing a game. For all x_7, if x_7 plays a game, then x_7 is taking a plane.