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 works, then x_6 is playing tennis. For all x_6, x_6 will work. For all x_6, x_6 is a mechanic or x_6 will not play tennis.
For all x_6, x_6 will play tennis. For all x_6, if x_6 plays tennis, then x_6 is a mechanic.