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, if x_5 were an electrician, then x_5 is playing a game. For all x_5, x_5 is an electrician. For all x_5, x_5 will play a game if and only if x_5 is a mechanic.
For all x_5, x_5 will play a game. For all x_5, if x_5 plays a game, then x_5 is a mechanic. For all x_5, if x_5 were a mechanic, then x_5 is playing a game.