Consider the following premises. If Jennifer were a carpenter, then Sarah is driving a car. Sarah is not driving a car. If Joseph were an artist, then Robert is a taxi driver. Jennifer is a carpenter if and only if Robert is a taxi driver. Can we infer the following from them? Joseph is not an artist.
 From the fact that if Jennifer were a carpenter, then Sarah is driving a car, and that Sarah is not driving a car we can infer that Jennifer is not a carpenter. From the fact that Jennifer is a carpenter if and only if Robert is a taxi driver, and that Jennifer is not a carpenter we can infer that Robert is not a taxi driver. Finally, from the fact that if Joseph were an artist, then Robert is a taxi driver, and that Robert is not a taxi driver we can infer that Joseph is not an artist. Therefore, the answer is yes.