Consider the following premises. If Charles plays a game, then Elisabeth is a janitor. If Elisabeth were a soldier, then Elisabeth is not a janitor. It is sunny or David is drinking water. If it is sunny, then Charles is playing a game. If David drinks water, then Elisabeth is a janitor. Can we infer the following from them? Elisabeth is not a soldier.
 From the fact that if it is sunny, then Charles is playing a game, and that if Charles plays a game, then Elisabeth is a janitor we can infer that if it is sunny, then Elisabeth is a janitor. From the fact that if it is sunny, then Elisabeth is a janitor, that if David drinks water, then Elisabeth is a janitor, and that it is sunny or David is drinking water we can infer that Elisabeth is a janitor. Finally, from the fact that if Elisabeth were a soldier, then Elisabeth is not a janitor, and that Elisabeth is a janitor we can infer that Elisabeth is not a soldier. Therefore, the answer is yes.