What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: If Patricia plays tennis, then it is cold. If Charles plays a game, then it is cold. Charles is not a janitor or Patricia is playing tennis. Charles is a janitor or Charles is playing a game.
Charles is playing a game or Patricia is playing tennis can be inferred via the resolution rule.