Consider the following premises. If Thomas plays squash, then Thomas is making tea. If Thomas makes tea, then it is late. It is not late. James is a nurse if and only if Thomas is playing squash. Can we infer the following from them? James is a nurse.
 From the fact that if Thomas makes tea, then it is late, and that it is not late we can infer that Thomas is not making tea. From the fact that if Thomas plays squash, then Thomas is making tea, and that Thomas is not making tea we can infer that Thomas is not playing squash. Finally, from the fact that James is a nurse if and only if Thomas is playing squash, and that Thomas is not playing squash we can infer that James is not a nurse, which contradicts that James is a nurse. Therefore, the answer is no.