What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_11, x_11 will take a plane or x_11 will not go running. There is at least one x_11 for which x_11 will go running if and only if x_11 will take a plane.
For all x_11, if x_11 goes running, then x_11 is taking a plane. There is at least one x_11 for which if x_11 goes running, then x_11 is taking a plane. There is at least one x_11 for which if x_11 takes a plane, then x_11 is running.