What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If Jessica plays a game, then Thomas is playing tennis. Michael is not a sailor. Thomas is playing tennis if and only if Michael is a sailor. If it rains, then Jessica is playing a game.
If it rains, then Thomas is playing tennis. If Thomas plays tennis, then Michael is a sailor. If Michael were a sailor, then Thomas is playing tennis. Thomas is not playing tennis.