Consider the following premises. There is at least one x_2 for which x_2 is a writer or x_2 is a scientist. For all x_2, x_2 is not a writer or x_2 is a sailor. For all x_2, if x_2 were a scientist, then x_2 is playing squash. For all x_2, if x_2 were a sailor, then x_2 is playing squash. Can we infer the following from them? There is at least one x_2 for which x_2 will play squash.
 From the fact that there is at least one x_2 for which x_2 is a writer or x_2 is a scientist, and that for all x_2, x_2 is not a writer or x_2 is a sailor we can infer that there is at least one x_2 for which x_2 is a scientist or x_2 is a sailor. Finally, from the fact that for all x_2, if x_2 were a scientist, then x_2 is playing squash, that for all x_2, if x_2 were a sailor, then x_2 is playing squash, and that there is at least one x_2 for which x_2 is a scientist or x_2 is a sailor we can infer that there is at least one x_2 for which x_2 will play squash. Therefore, the answer is yes.