What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_16, if x_16 listens to a song, then x_16 is driving a car. For all x_16, x_16 is an artist. There is at least one x_16 for which if x_16 were fast, then x_16 is not driving a car. For all x_16, x_16 will listen to a song if and only if x_16 will write a letter. For all x_16, if x_16 were an artist, then x_16 is writing a letter.
For all x_16, x_16 will write a letter. For all x_16, if x_16 listens to a song, then x_16 is writing a letter. For all x_16, if x_16 writes a letter, then x_16 is listening to a song.