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, if x_8 drinks water, then x_8 is a police officer. For all x_8, if x_8 works, then x_8 is writing a letter. For all x_8, x_8 will work. For all x_8, if x_8 were sad, then x_8 is a police officer. For all x_8, x_8 will drink water or x_8 is sad.
For all x_8, x_8 will write a letter. For all x_8, x_8 is a police officer.