What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_7, x_7 will not sleep or x_7 is a lawyer. For all x_7, x_7 will sleep or x_7 will listen to a song. For all x_7, if x_7 listens to a song, then x_7 is playing squash. There is at least one x_7 for which x_7 is a lawyer if and only if x_7 will play squash.
For all x_7, x_7 will listen to a song or x_7 is a lawyer. There is at least one x_7 for which if x_7 were a lawyer, then x_7 is playing squash. There is at least one x_7 for which if x_7 plays squash, then x_7 is a lawyer.