Consider the following premises. If Richard were rich, then Susan is sad. If Michael were a scientist, then Richard is rich. Susan is not sad. If Robert plays squash, then it is overcast. Robert is playing squash. Can we infer the following from them? It is overcast and Michael is not a scientist.
 From the fact that if Robert plays squash, then it is overcast, and that Robert is playing squash we can infer that it is overcast. From the fact that if Michael were a scientist, then Richard is rich, and that if Richard were rich, then Susan is sad we can infer that if Michael were a scientist, then Susan is sad. From the fact that if Michael were a scientist, then Susan is sad, and that Susan is not sad we can infer that Michael is not a scientist. Finally, from the fact that it is overcast, and that Michael is not a scientist we can infer that it is overcast and Michael is not a scientist. Therefore, the answer is yes.