Consider the following premises. Elisabeth is playing squash or it is not cold. If it is windy, then it is late. It is windy if and only if Elisabeth is playing squash. Can we infer the following from them? If it is cold, then it is late.
 From the fact that it is windy if and only if Elisabeth is playing squash we can infer that if Elisabeth plays squash, then it is windy. From the fact that Elisabeth is playing squash or it is not cold we can infer that if it is cold, then Elisabeth is playing squash. From the fact that if Elisabeth plays squash, then it is windy, and that if it is windy, then it is late we can infer that if Elisabeth plays squash, then it is late. Finally, from the fact that if it is cold, then Elisabeth is playing squash, and that if Elisabeth plays squash, then it is late we can infer that if it is cold, then it is late. Therefore, the answer is yes.