Consider the following premises. For all x_9, if x_9 were a writer, then x_9 is an electrician. For all x_9, x_9 is a nurse or x_9 will play tennis. For all x_9, if x_9 were a nurse, then x_9 is making tea. For all x_9, if x_9 makes tea, then x_9 is an electrician. For all x_9, if x_9 plays tennis, then x_9 is a writer. Can we infer the following from them? For all x_9, x_9 is an electrician or x_9 is a carpenter.
 From the fact that for all x_9, if x_9 plays tennis, then x_9 is a writer, and that for all x_9, if x_9 were a writer, then x_9 is an electrician we can infer that for all x_9, if x_9 plays tennis, then x_9 is an electrician. From the fact that for all x_9, if x_9 were a nurse, then x_9 is making tea, and that for all x_9, if x_9 makes tea, then x_9 is an electrician we can infer that for all x_9, if x_9 were a nurse, then x_9 is an electrician. From the fact that for all x_9, if x_9 were a nurse, then x_9 is an electrician, that for all x_9, if x_9 plays tennis, then x_9 is an electrician, and that for all x_9, x_9 is a nurse or x_9 will play tennis we can infer that for all x_9, x_9 is an electrician. Finally, from the fact that for all x_9, x_9 is an electrician we can infer that for all x_9, x_9 is an electrician or x_9 is a carpenter. Therefore, the answer is yes.