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: For all x_15, if x_15 plays a game, then x_15 is running. Jessica is not running. If it is sunny, then Jennifer is sleeping. Jennifer is sleeping if and only if Jessica is playing a game.
If Jennifer sleeps, then Jessica is playing a game can be inferred via the biconditional elimination rule. If Jessica plays a game, then Jennifer is sleeping can be inferred via the biconditional elimination rule.