Consider the following premises. If James were fast, then Thomas is drinking water. If Thomas drinks water, then Charles is reading a book. If Charles reads a book, then Mary is playing tennis. If Mary plays tennis, then Patricia is an electrician. Can we infer the following from them? If we can, name the inference rule being used: If James were fast, then Patricia is an electrician.
 From the fact that if James were fast, then Thomas is drinking water, and that if Thomas drinks water, then Charles is reading a book we can infer that if James were fast, then Charles is reading a book via transitivity. From the fact that if Charles reads a book, then Mary is playing tennis, and that if Mary plays tennis, then Patricia is an electrician we can infer that if Charles reads a book, then Patricia is an electrician via transitivity. Finally, from the fact that if James were fast, then Charles is reading a book, and that if Charles reads a book, then Patricia is an electrician we can infer that if James were fast, then Patricia is an electrician via transitivity. Therefore, the answer is yes.