Consider the following premises. For all y_3, y_3 is poor or y_3 is not a soldier. There is at least one y_3 for which y_3 is a soldier or y_3 is not a taxi driver. For all y_3, if y_3 were poor, then y_3 is a taxi driver. Can we infer the following from them? For all y_3, the fact that y_3 were a taxi driver does not imply that y_3 is poor.
That contradicts the premises. Therefore the answer is no.