Consider the following premises. For all x_7, if x_7 were a taxi driver, then x_7 is making tea. For all x_7, x_7 is a taxi driver if and only if x_7 will make tea. Can we infer the following from them? If James makes tea, then James is a taxi driver.
 From the fact that for all x_7, x_7 is a taxi driver if and only if x_7 will make tea we can infer that for all x_7, if x_7 makes tea, then x_7 is a taxi driver. From the fact that for all x_7, if x_7 were a taxi driver, then x_7 is making tea, and that for all x_7, if x_7 makes tea, then x_7 is a taxi driver we can infer that for all x_7, x_7 is a taxi driver if and only if x_7 will make tea. From the fact that for all x_7, x_7 is a taxi driver if and only if x_7 will make tea we can infer that James is a taxi driver if and only if James is making tea. Finally, from the fact that James is a taxi driver if and only if James is making tea we can infer that if James makes tea, then James is a taxi driver. Therefore, the answer is yes.