Consider the following premises. For all x_10, if x_10 writes a letter, then x_10 is poor. If Thomas were poor, then it is not windy. It is windy. Can we infer the following from them? Thomas is not writing a letter.
 From the fact that for all x_10, if x_10 writes a letter, then x_10 is poor we can infer that if Thomas writes a letter, then Thomas is poor. From the fact that if Thomas were poor, then it is not windy, and that it is windy we can infer that Thomas is not poor. Finally, from the fact that if Thomas writes a letter, then Thomas is poor, and that Thomas is not poor we can infer that Thomas is not writing a letter. Therefore, the answer is yes.