Consider the following premises. It is cold if and only if Barbara is curious. Barbara is curious or Linda is running. If it is sunny, then it is not cold. If Linda goes running, then it is cold. Can we infer the following from them? It is not sunny.
 From the fact that it is cold if and only if Barbara is curious we can infer that if Barbara were curious, then it is cold. From the fact that if Barbara were curious, then it is cold, that if Linda goes running, then it is cold, and that Barbara is curious or Linda is running we can infer that it is cold. Finally, from the fact that if it is sunny, then it is not cold, and that it is cold we can infer that it is not sunny. Therefore, the answer is yes.