Consider the following premises. Charles is a scientist or it is not snowing. If Elisabeth goes running, then Charles is a scientist. Elisabeth is running. Can we infer the following from them? Charles is a scientist.
 From the fact that Charles is a scientist or it is not snowing we can infer that if it snows, then Charles is a scientist. From the fact that Elisabeth is running we can infer that Elisabeth is running or it is snowing. Finally, from the fact that if Elisabeth goes running, then Charles is a scientist, that if it snows, then Charles is a scientist, and that Elisabeth is running or it is snowing we can infer that Charles is a scientist. Therefore, the answer is yes.