Consider the following premises. For all x_5, if x_5 were a politician, then x_5 is playing squash. For all x_5, x_5 is a politician and x_5 is a police officer. For all x_5, if x_5 plays squash, then x_5 is a server. Can we infer the following from them? For all x_5, if x_5 were a politician, then x_5 is playing squash.
That is one of the premises. Therefore, the answer is yes.