What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_5, if x_5 were an astronaut, then x_5 is listening to a song. For all x_5, x_5 will cook or x_5 is an astronaut. For all x_5, if x_5 cooks, then x_5 is a doctor. For all x_5, if x_5 were a doctor, then x_5 is listening to a song.
For all x_5, if x_5 cooks, then x_5 is listening to a song.