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 sad or x_5 is an electrician. For all x_5, x_5 will play tennis if and only if x_5 is an electrician. For all x_5, if x_5 were sad, then x_5 is a soldier. For all x_5, if x_5 were a soldier, then x_5 is playing tennis.
For all x_5, if x_5 were sad, then x_5 is playing tennis. For all x_5, if x_5 plays tennis, then x_5 is an electrician. For all x_5, if x_5 were an electrician, then x_5 is playing tennis.