What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all z_2, if z_2 were a taxi driver, then z_2 is listening to a song. It is not windy. Joseph is listening to a song if and only if it is windy.
If Joseph listens to a song, then it is windy. If it is windy, then Joseph is listening to a song. Joseph is not listening to a song.