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 sleeps, then x_6 is taking a plane. There is at least one x_6 for which x_6 is a server or x_6 will make tea. For all x_6, if x_6 makes tea, then x_6 is cooking. For all x_6, if x_6 takes a plane, then x_6 is cooking. For all x_6, x_6 is not a server or x_6 will sleep.
For all x_6, if x_6 sleeps, then x_6 is cooking. There is at least one x_6 for which x_6 will make tea or x_6 will sleep.