Consider the following premises. For all x_13, x_13 will read a book or x_13 will drink water. For all x_13, if x_13 drinks water, then x_13 is excited. For all x_13, x_13 is excited if and only if x_13 will read a book. For all x_13, if x_13 were excited, then x_13 is drinking water. Can we infer the following from them? If we can, name the inference rule being used: David is a janitor.
We cannot infer that from the premises. Therefore the answer is no.