Consider the following premises. For all x_11, if x_11 were a server, then x_11 is curious. For all x_11, if x_11 writes a letter, then x_11 is curious. For all x_11, x_11 will not sleep or x_11 is a server. For all x_11, x_11 will sleep. For all x_11, x_11 is a taxi driver and x_11 is a mechanic. Can we infer the following from them? For all x_11, x_11 is a taxi driver and x_11 is curious.
 From the fact that for all x_11, x_11 is a taxi driver and x_11 is a mechanic we can infer that for all x_11, x_11 is a taxi driver. From the fact that for all x_11, x_11 will sleep we can infer that for all x_11, x_11 will sleep or x_11 will write a letter. From the fact that for all x_11, x_11 will sleep or x_11 will write a letter, and that for all x_11, x_11 will not sleep or x_11 is a server we can infer that for all x_11, x_11 will write a letter or x_11 is a server. From the fact that for all x_11, if x_11 writes a letter, then x_11 is curious, that for all x_11, if x_11 were a server, then x_11 is curious, and that for all x_11, x_11 will write a letter or x_11 is a server we can infer that for all x_11, x_11 is curious. Finally, from the fact that for all x_11, x_11 is a taxi driver, and that for all x_11, x_11 is curious we can infer that for all x_11, x_11 is a taxi driver and x_11 is curious. Therefore, the answer is yes.