What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_6, x_6 is a politician or x_6 will listen to a song. For all x_6, x_6 is a taxi driver or x_6 is not a politician. For all x_6, x_6 is a taxi driver if and only if x_6 will listen to a song.
For all x_6, if x_6 were a politician, then x_6 is a taxi driver. For all x_6, if x_6 were a taxi driver, then x_6 is listening to a song. For all x_6, if x_6 listens to a song, then x_6 is a taxi driver.