Consider the following premises. For all x_16, x_16 is an office clerk or x_16 will play tennis. For all x_16, x_16 is not a taxi driver. There is at least one x_16 for which x_16 is an office clerk if and only if x_16 is a taxi driver. Can we infer the following from them? If we can, name the inference rule being used: For all x_16, neither x_16 will play tennis nor x_16 will go running.
That contradicts the premises. Therefore the answer is no.