What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all y, y is happy if and only if y is an artist. For all y, y is happy or y is not an artist.
For all y, if y were an artist, then y is happy. For all y, if y were happy, then y is an artist. For all y, if y were an artist, then y is happy.