What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all y_2, if y_2 reads a book, then y_2 is playing tennis. For all y_2, y_2 is a janitor or y_2 is not a server. There is at least one y_2 for which if y_2 plays tennis, then y_2 is a server.
There is at least one y_2 for which if y_2 reads a book, then y_2 is a server. For all y_2, if y_2 were a server, then y_2 is a janitor.