What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all y, if y were a musician, then y is driving a car. For all y, y will drive a car. For all y, if y drives a car, then y is a musician.
For all y, y is a musician. For all y, y is a musician if and only if y will drive a car. For all y, y will drive a car if and only if y is a musician.