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 were a bartender, then y is a soldier. If John drinks water, then Patricia is a janitor. John is drinking water. If it is cloudy, then Jessica is a soldier. Jessica is a bartender or it is cloudy.
Patricia is a janitor can be inferred via the modus ponens rule.