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_17, x_17 is an artist. There is at least one x_17 for which if x_17 were an office clerk, then x_17 is driving a car. For all x_17, x_17 will drink water. For all x_17, x_17 is an artist if and only if x_17 is an office clerk.
For all x_17, x_17 is an artist and x_17 will drink water can be inferred via the universal conjunction rule. For all x_17, x_17 will drink water and x_17 is an artist can be inferred via the universal conjunction rule. For all x_17, if x_17 were an artist, then x_17 is an office clerk can be inferred via the universal biconditional elimination rule. For all x_17, if x_17 were an office clerk, then x_17 is an artist can be inferred via the universal biconditional elimination rule.