What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: For all y, if y plays tennis, then y is driving a car. For all y, if y were curious, then y is an electrician. For all y, if y were an electrician, then y is an office clerk. For all y, y will play tennis or y is not an office clerk.
For all y, if y were curious, then y is an office clerk can be inferred via the universal transitivity rule. For all y, if y were an office clerk, then y is playing tennis can be inferred via the universal rewriting rule.