What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x_5 for which x_5 is a carpenter if and only if x_5 will listen to a song. For all x_5, if x_5 were a carpenter, then x_5 is listening to a song.
There is at least one x_5 for which if x_5 were a carpenter, then x_5 is listening to a song. There is at least one x_5 for which if x_5 listens to a song, then x_5 is a carpenter.