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 x_7, if x_7 drives a car, then x_7 is running. For all x_7, if x_7 goes running, then x_7 is a taxi driver. For all x_7, if x_7 were a taxi driver, then x_7 is driving a car. For all x_7, if x_7 were a taxi driver, then x_7 is driving a car.
For all x_7, if x_7 drives a car, then x_7 is a taxi driver can be inferred via the universal transitivity rule. For all x_7, if x_7 goes running, then x_7 is driving a car can be inferred via the universal transitivity rule. For all x_7, if x_7 goes running, then x_7 is driving a car can be inferred via the universal transitivity rule. For all x_7, if x_7 were a taxi driver, then x_7 is running can be inferred via the universal transitivity rule. For all x_7, if x_7 were a taxi driver, then x_7 is running can be inferred via the universal transitivity rule.