Consider the following premises. It is cloudy if and only if Sarah is sleeping. If Charles were not a lawyer, then Jessica is running. It is cloudy if and only if Charles is a lawyer. Sarah is not sleeping. Can we infer the following from them? Jessica is not running.
 From the fact that it is cloudy if and only if Sarah is sleeping, and that Sarah is not sleeping we can infer that it is not cloudy. From the fact that it is cloudy if and only if Charles is a lawyer, and that it is not cloudy we can infer that Charles is not a lawyer. Finally, from the fact that if Charles were not a lawyer, then Jessica is running, and that Charles is not a lawyer we can infer that Jessica is running, which contradicts that Jessica is not running. Therefore, the answer is no.