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