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_9 for which x_9 is an electrician if and only if x_9 will listen to a song. For all x_9, if x_9 listens to a song, then x_9 is playing squash. For all x_9, if x_9 plays squash, then x_9 is an electrician.
For all x_9, if x_9 listens to a song, then x_9 is an electrician. There is at least one x_9 for which if x_9 were an electrician, then x_9 is listening to a song. There is at least one x_9 for which if x_9 listens to a song, then x_9 is an electrician.