Consider the following premises. If Patricia were poor, then Joseph is a bartender. If it snows, then Mary is driving a car. If it is late, then Patricia is poor. It is snowing. Joseph is not a bartender. Can we infer the following from them? It is late.
 From the fact that if it snows, then Mary is driving a car, and that it is snowing we can infer that Mary is driving a car. From the fact that if it is late, then Patricia is poor, and that if Patricia were poor, then Joseph is a bartender we can infer that if it is late, then Joseph is a bartender. Finally, from the fact that if it is late, then Joseph is a bartender, and that Joseph is not a bartender we can infer that it is not late, which contradicts that It is late. Therefore, the answer is no.