Consider the following premises. Jessica is a police officer or William is not a poet. If it snows, then William is a poet. Jessica is a police officer if and only if it is snowing. Can we infer the following from them? If Jessica were a police officer, then it is snowing.
 From the fact that Jessica is a police officer or William is not a poet we can infer that if William were a poet, then Jessica is a police officer. From the fact that if it snows, then William is a poet, and that if William were a poet, then Jessica is a police officer we can infer that if it snows, then Jessica is a police officer. Finally, from the fact that Jessica is a police officer if and only if it is snowing we can infer that if Jessica were a police officer, then it is snowing. Therefore, the answer is yes.