Consider the following premises. For all x_7, x_7 will climb a mountain. There is at least one x_7 for which if x_7 reads a book, then x_7 is playing squash. For all x_7, if x_7 were a lawyer, then x_7 is playing squash. For all x_7, x_7 will read a book or x_7 is a lawyer. Can we infer the following from them? There is at least one x_7 for which x_7 will play squash and x_7 will climb a mountain.
 From the fact that there is at least one x_7 for which if x_7 reads a book, then x_7 is playing squash, that for all x_7, if x_7 were a lawyer, then x_7 is playing squash, and that for all x_7, x_7 will read a book or x_7 is a lawyer we can infer that there is at least one x_7 for which x_7 will play squash. Finally, from the fact that there is at least one x_7 for which x_7 will play squash, and that for all x_7, x_7 will climb a mountain we can infer that there is at least one x_7 for which x_7 will play squash and x_7 will climb a mountain. Therefore, the answer is yes.