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 or x_7 will work. For all x_7, if x_7 were an artist, then x_7 is taking a plane. For all x_7, x_7 will climb a mountain if and only if x_7 is an artist. For all x_7, if x_7 works, then x_7 is an artist.
For all x_7, if x_7 works, then x_7 is taking a plane. For all x_7, if x_7 climbs a mountain, then x_7 is an artist. For all x_7, if x_7 were an artist, then x_7 is climbing a mountain.