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 it is cold, then Elisabeth is driving a car. If it snows, then Elisabeth is not driving a car. Patricia is a police officer. It is cold.
Elisabeth is driving a car can be inferred via the modus ponens rule. Patricia is a police officer and it is cold can be inferred via the conjunction rule. It is cold and Patricia is a police officer can be inferred via the conjunction rule.