Consider the following premises. For all x_14, if x_14 plays squash, then x_14 is not sad. There is at least one x_14 for which if x_14 were excited, then x_14 is sad. For all x_14, if x_14 writes a letter, then x_14 is sleeping. For all x_14, if x_14 sleeps, then x_14 is sad. For all x_14, x_14 will write a letter. Can we infer the following from them? There is at least one x_14 for which x_14 will not play squash.
 From the fact that for all x_14, x_14 will write a letter we can infer that for all x_14, x_14 will write a letter or x_14 is excited. From the fact that for all x_14, if x_14 writes a letter, then x_14 is sleeping, and that for all x_14, if x_14 sleeps, then x_14 is sad we can infer that for all x_14, if x_14 writes a letter, then x_14 is sad. From the fact that for all x_14, if x_14 writes a letter, then x_14 is sad, that there is at least one x_14 for which if x_14 were excited, then x_14 is sad, and that for all x_14, x_14 will write a letter or x_14 is excited we can infer that there is at least one x_14 for which x_14 is sad. Finally, from the fact that for all x_14, if x_14 plays squash, then x_14 is not sad, and that there is at least one x_14 for which x_14 is sad we can infer that there is at least one x_14 for which x_14 will not play squash. Therefore, the answer is yes.