What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_8, x_8 will play squash or x_8 is a police officer. For all x_8, if x_8 plays squash, then x_8 is a doctor. For all x_8, if x_8 writes a letter, then x_8 is not a doctor. There is at least one x_8 for which if x_8 were a police officer, then x_8 is a doctor.
There is at least one x_8 for which x_8 is a doctor.