Consider the following premises. For all x_7, x_7 will play tennis and x_7 will climb a mountain. For all x_7, x_7 is a nurse. For all x_7, if x_7 were a nurse, then x_7 is a lawyer. Can we infer the following from them? For all x_7, x_7 will play tennis and x_7 is a lawyer.
 From the fact that for all x_7, x_7 will play tennis and x_7 will climb a mountain we can infer that for all x_7, x_7 will play tennis. From the fact that for all x_7, if x_7 were a nurse, then x_7 is a lawyer, and that for all x_7, x_7 is a nurse we can infer that for all x_7, x_7 is a lawyer. Finally, from the fact that for all x_7, x_7 will play tennis, and that for all x_7, x_7 is a lawyer we can infer that for all x_7, x_7 will play tennis and x_7 is a lawyer. Therefore, the answer is yes.