Consider the following premises. For all x_15, if x_15 were a sailor, then x_15 is making tea. For all x_15, if x_15 makes tea, then x_15 is a doctor. There is at least one x_15 for which if x_15 were a doctor, then x_15 is a nurse. For all x_15, x_15 is a nurse if and only if x_15 is a sailor. Can we infer the following from them? For all x_15, the fact that x_15 were a sailor does not imply that x_15 is making tea.
That contradicts the premises. Therefore the answer is no.