Consider the following premises. For all x_15, if x_15 were fast, then x_15 is not drinking water. For all x_15, x_15 is a cashier or x_15 is a police officer. For all x_15, x_15 is not a cashier. Patricia is fast or it is cloudy. For all x_15, if x_15 were a police officer, then x_15 is drinking water. Can we infer the following from them? If we can, name the inference rule being used: For all x_15, x_15 is a cashier or x_15 is a police officer.
That is one of the premises. Therefore, the answer is yes.