Consider the following premises. Patricia is not rich. If it is windy, then Richard is taking a plane. If Richard takes a plane, then Patricia is rich. If David were a politician, then it is windy. Can we infer the following from them? David is not a politician.
 From the fact that if Richard takes a plane, then Patricia is rich, and that Patricia is not rich we can infer that Richard is not taking a plane. From the fact that if it is windy, then Richard is taking a plane, and that Richard is not taking a plane we can infer that it is not windy. Finally, from the fact that if David were a politician, then it is windy, and that it is not windy we can infer that David is not a politician. Therefore, the answer is yes.