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 climb a mountain and x_7 will take a plane. For all x_7, if x_7 climbs a mountain, then x_7 is playing a game. There is at least one x_7 for which x_7 will play tennis.
For all x_7, x_7 will climb a mountain. For all x_7, x_7 will take a plane.