What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all y, y will not play a game. There is at least one y for which if y plays a game, then y is playing squash. For all y, if y plays squash, then y is playing a game.
For all y, y will not play squash. There is at least one y for which y will play a game if and only if y will play squash. There is at least one y for which y will play squash if and only if y will play a game.