Consider the following premises. Robert is running or it is cloudy. If it snows, then Jessica is not a server. If it is cloudy, then Jessica is a server. If it doesn't snow, then Karen is a bartender. If Robert goes running, then Jessica is a server. Can we infer the following from them? Karen is a bartender.
 From the fact that if Robert goes running, then Jessica is a server, that if it is cloudy, then Jessica is a server, and that Robert is running or it is cloudy we can infer that Jessica is a server. From the fact that if it snows, then Jessica is not a server, and that Jessica is a server we can infer that it is not snowing. Finally, from the fact that if it doesn't snow, then Karen is a bartender, and that it is not snowing we can infer that Karen is a bartender. Therefore, the answer is yes.