Consider the following premises. For all x_12, if x_12 were a janitor, then x_12 is fast. For all x_12, if x_12 sleeps, then x_12 is playing a game. For all x_12, x_12 will work or x_12 is a janitor. For all x_12, if x_12 were fast, then x_12 is sleeping. There is at least one x_12 for which if x_12 were excited, then x_12 is not playing a game. For all x_12, if x_12 works, then x_12 is fast. Can we infer the following from them? For all x_12, x_12 is excited.
 From the fact that for all x_12, if x_12 works, then x_12 is fast, that for all x_12, if x_12 were a janitor, then x_12 is fast, and that for all x_12, x_12 will work or x_12 is a janitor we can infer that for all x_12, x_12 is fast. From the fact that for all x_12, if x_12 were fast, then x_12 is sleeping, and that for all x_12, if x_12 sleeps, then x_12 is playing a game we can infer that for all x_12, if x_12 were fast, then x_12 is playing a game. From the fact that for all x_12, if x_12 were fast, then x_12 is playing a game, and that for all x_12, x_12 is fast we can infer that for all x_12, x_12 will play a game. Finally, from the fact that there is at least one x_12 for which if x_12 were excited, then x_12 is not playing a game, and that for all x_12, x_12 will play a game we can infer that there is at least one x_12 for which x_12 is not excited, which contradicts that For all x_12, x_12 is excited. Therefore, the answer is no.