Consider the following premises. For all x_12, x_12 is a soldier or x_12 is a server. If Joseph were a server, then Patricia is sleeping. Robert is happy. If Joseph were a soldier, then Patricia is sleeping. Can we infer the following from them? If we can, name the inference rule being used: If Patricia sleeps, then Robert is happy.
We cannot infer that from the premises. Therefore the answer is no.