Consider the following premises. For all x_11, x_11 will write a letter or x_11 is a writer. For all x_11, x_11 will not write a letter or x_11 is curious. For all x_11, x_11 will not play squash. For all x_11, x_11 will play squash or x_11 is a taxi driver. For all x_11, if x_11 were curious, then x_11 is listening to a song. For all x_11, if x_11 were a writer, then x_11 is listening to a song. Can we infer the following from them? If we can, name the inference rule being used: For all x_11, x_11 is a taxi driver.
 From the fact that for all x_11, x_11 will write a letter or x_11 is a writer, and that for all x_11, x_11 will not write a letter or x_11 is curious we can infer that for all x_11, x_11 is a writer or x_11 is curious via universal resolution. From the fact that for all x_11, if x_11 were a writer, then x_11 is listening to a song, that for all x_11, if x_11 were curious, then x_11 is listening to a song, and that for all x_11, x_11 is a writer or x_11 is curious we can infer that for all x_11, x_11 will listen to a song via universal disjunction elimination. Finally, from the fact that for all x_11, x_11 will play squash or x_11 is a taxi driver, and that for all x_11, x_11 will not play squash we can infer that for all x_11, x_11 is a taxi driver via universal disjunctive syllogism. Therefore, the answer is yes.