Consider the following premises. For all x_12, if x_12 were an office clerk, then x_12 is making tea. For all x_12, x_12 will climb a mountain or x_12 is an office clerk. There is at least one x_12 for which x_12 will not climb a mountain or x_12 will drive a car. For all x_12, if x_12 drives a car, then x_12 is making tea. Can we infer the following from them? If we can, name the inference rule being used: For all x_12, neither x_12 will make tea nor x_12 is a cashier.
That contradicts the premises. Therefore the answer is no.