Consider the following premises. For all x_7, x_7 will write a letter or x_7 is a taxi driver. For all x_7, x_7 will not write a letter. Linda is not a taxi driver or Elisabeth is excited. Can we infer the following from them? Linda is an office clerk or Elisabeth is excited.
 From the fact that for all x_7, x_7 will write a letter or x_7 is a taxi driver, and that for all x_7, x_7 will not write a letter we can infer that for all x_7, x_7 is a taxi driver. From the fact that for all x_7, x_7 is a taxi driver we can infer that for all x_7, x_7 is a taxi driver or x_7 is an office clerk. From the fact that for all x_7, x_7 is a taxi driver or x_7 is an office clerk we can infer that Linda is a taxi driver or Linda is an office clerk. Finally, from the fact that Linda is a taxi driver or Linda is an office clerk, and that Linda is not a taxi driver or Elisabeth is excited we can infer that Linda is an office clerk or Elisabeth is excited. Therefore, the answer is yes.