What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_5, x_5 is curious or x_5 will not write a letter. There is at least one x_5 for which if x_5 were curious, then x_5 is a police officer. For all x_5, if x_5 were a police officer, then x_5 is working.
There is at least one x_5 for which if x_5 were curious, then x_5 is working. For all x_5, if x_5 writes a letter, then x_5 is curious.