Consider the following premises. For all x_12, x_12 is a taxi driver. For all x_12, x_12 is a musician or x_12 will go running. For all x_12, x_12 will not go running or x_12 will read a book. For all x_12, x_12 is not a musician or x_12 will take a plane. There is at least one x_12 for which if x_12 takes a plane, then x_12 is not a taxi driver. Can we infer the following from them? If we can, name the inference rule being used: There is at least one x_12 for which x_12 will read a book.
 From the fact that for all x_12, x_12 is a musician or x_12 will go running, and that for all x_12, x_12 is not a musician or x_12 will take a plane we can infer that for all x_12, x_12 will go running or x_12 will take a plane via universal resolution. From the fact that there is at least one x_12 for which if x_12 takes a plane, then x_12 is not a taxi driver, and that for all x_12, x_12 is a taxi driver we can infer that there is at least one x_12 for which x_12 will not take a plane via existential modus tollens. From the fact that for all x_12, x_12 will go running or x_12 will take a plane, and that for all x_12, x_12 will not go running or x_12 will read a book we can infer that for all x_12, x_12 will take a plane or x_12 will read a book via universal resolution. Finally, from the fact that for all x_12, x_12 will take a plane or x_12 will read a book, and that there is at least one x_12 for which x_12 will not take a plane we can infer that there is at least one x_12 for which x_12 will read a book via existential disjunctive syllogism. Therefore, the answer is yes.