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_12 for which x_12 is not a soldier. For all x_12, x_12 is a soldier or x_12 is a nurse. For all x_12, x_12 is a musician and x_12 will write a letter.
There is at least one x_12 for which x_12 is a nurse. For all x_12, x_12 is a musician. For all x_12, x_12 will write a letter.