Consider the following premises. There is at least one x_8 for which x_8 is a taxi driver or x_8 is not excited. For all x_8, if x_8 were a carpenter, then x_8 is excited. For all x_8, if x_8 were a taxi driver, then x_8 is working. Can we infer the following from them? If we can, name the inference rule being used: For all x_8, the fact that x_8 were a carpenter does not imply that x_8 is working.
That contradicts the premises. Therefore the answer is no.