What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_11, x_11 is not fast or x_11 will listen to a song. For all x_11, x_11 is an astronaut. For all x_11, if x_11 were a sailor, then x_11 is a mechanic. For all x_11, x_11 is fast or x_11 is a sailor. There is at least one x_11 for which if x_11 listens to a song, then x_11 is a mechanic.
For all x_11, x_11 is a sailor or x_11 will listen to a song.