Consider the following premises. If Richard works, then it is cold. If it is sunny, then it is windy. It is sunny or Richard is working. It is cold if and only if it is windy. Can we infer the following from them? It is not cold.
 From the fact that it is cold if and only if it is windy we can infer that if it is windy, then it is cold. From the fact that if it is sunny, then it is windy, and that if it is windy, then it is cold we can infer that if it is sunny, then it is cold. Finally, from the fact that if it is sunny, then it is cold, that if Richard works, then it is cold, and that it is sunny or Richard is working we can infer that it is cold, which contradicts that It is not cold. Therefore, the answer is no.