What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x_11 for which if x_11 were a taxi driver, then x_11 is driving a car. For all x_11, if x_11 climbs a mountain, then x_11 is driving a car. For all x_11, x_11 will drive a car if and only if x_11 is an artist. For all x_11, x_11 is a taxi driver or x_11 will climb a mountain.
There is at least one x_11 for which x_11 will drive a car. For all x_11, if x_11 drives a car, then x_11 is an artist. For all x_11, if x_11 were an artist, then x_11 is driving a car.