What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_6, if x_6 takes a plane, then x_6 is not a nurse. For all x_6, x_6 is a nurse. For all x_6, x_6 will play a game. For all x_6, if x_6 plays a game, then x_6 is a sailor.
For all x_6, x_6 is a sailor. For all x_6, x_6 will not take a plane. For all x_6, x_6 is a nurse and x_6 will play a game. For all x_6, x_6 will play a game and x_6 is a nurse.