Consider the following premises. James is a politician or it is cold. James is not playing tennis. For all x_7, x_7 will play tennis if and only if x_7 is a politician. Can we infer the following from them? It is not cold.
 From the fact that for all x_7, x_7 will play tennis if and only if x_7 is a politician we can infer that James is playing tennis if and only if James is a politician. From the fact that James is playing tennis if and only if James is a politician, and that James is not playing tennis we can infer that James is not a politician. Finally, from the fact that James is a politician or it is cold, and that James is not a politician we can infer that it is cold, which contradicts that It is not cold. Therefore, the answer is no.