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 y, if y drinks water, then y is playing a game. For all y, if y were rich, then y is bored. For all y, if y plays a game, then y is a janitor. For all y, if y were a janitor, then y is rich.
For all y, if y drinks water, then y is a janitor can be inferred via the universal transitivity rule. For all y, if y plays a game, then y is rich can be inferred via the universal transitivity rule. For all y, if y were a janitor, then y is bored can be inferred via the universal transitivity rule.