What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all y_3, y_3 is an office clerk. For all y_3, if y_3 were a politician, then y_3 is playing tennis. There is at least one y_3 for which y_3 is a politician.
There is at least one y_3 for which y_3 will play tennis. There is at least one y_3 for which y_3 is a politician and y_3 is an office clerk. There is at least one y_3 for which y_3 is an office clerk and y_3 is a politician.