What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If Jennifer makes tea, then Karen is an office clerk. If Charles plays a game, then Jennifer is making tea. If John listens to a song, then Charles is playing a game. If Karen were an office clerk, then John is listening to a song.
If Jennifer makes tea, then John is listening to a song. If Charles plays a game, then Karen is an office clerk. If John listens to a song, then Jennifer is making tea. If Karen were an office clerk, then Charles is playing a game.