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 listen to a song or x_7 is a scientist. For all x_7, x_7 will play squash or x_7 will not listen to a song. There is at least one x_7 for which x_7 will play squash if and only if x_7 is a scientist.
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 if x_7 plays squash, then x_7 is a scientist. There is at least one x_7 for which if x_7 were a scientist, then x_7 is playing squash.