What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If Elisabeth plays a game, then it is raining. Elisabeth is playing a game or it is cold. It is not raining. If it rains, then Elisabeth is playing a game.
Elisabeth is not playing a game. Elisabeth is playing a game if and only if it is raining. It is raining if and only if Elisabeth is playing a game.