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, x_6 is curious if and only if x_6 will sleep. For all x_6, if x_6 were a taxi driver, then x_6 is sleeping. For all x_6, if x_6 were curious, then x_6 is a taxi driver.
For all x_6, if x_6 were curious, then x_6 is sleeping. For all x_6, if x_6 were curious, then x_6 is sleeping. For all x_6, if x_6 sleeps, then x_6 is curious.