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, y is sad or y is a musician. For all y, if y drives a car, then y is running. For all y, if y were a musician, then y is running. For all y, y is not sad or y will drive a car.
For all y, y is a musician or y will drive a car can be inferred via the universal resolution rule.