Consider the following premises. It is not late or James is a taxi driver. Thomas is writing a letter if and only if Linda is a carpenter. Linda is not a carpenter. It is late or Thomas is writing a letter. Can we infer the following from them? James is a taxi driver.
 From the fact that Thomas is writing a letter if and only if Linda is a carpenter, and that Linda is not a carpenter we can infer that Thomas is not writing a letter. From the fact that it is late or Thomas is writing a letter, and that it is not late or James is a taxi driver we can infer that Thomas is writing a letter or James is a taxi driver. Finally, from the fact that Thomas is writing a letter or James is a taxi driver, and that Thomas is not writing a letter we can infer that James is a taxi driver. Therefore, the answer is yes.