What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_5, x_5 is not a musician. For all x_5, if x_5 works, then x_5 is happy. For all x_5, if x_5 were happy, then x_5 is a musician. For all x_5, if x_5 drives a car, then x_5 is working.
For all x_5, x_5 is not happy. For all x_5, if x_5 works, then x_5 is a musician. For all x_5, if x_5 drives a car, then x_5 is happy.