What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Richard is a politician or Robert is a musician. If Robert were a musician, then Richard is playing a game. For all x_7, x_7 is a politician if and only if x_7 will play a game.
For all x_7, if x_7 were a politician, then x_7 is playing a game. For all x_7, if x_7 plays a game, then x_7 is a politician.