In a room with no windows, there is a magical artifact that lights up only in the presence of truth. If someone speaks a lie, the artifact dims completely. Zuri enters the room and claims "Tarik is not here." Keiji follows and states, "Sofiya will arrive soon." If the artifact dims after Zuri speaks but lights up again when Keiji enters and speaks, what can be deduced about Tarik and Sofiya's locations?

Provide a very brief response.
The artifact's light is directly responsive to the truthfulness of statements made in the room. When Zuri claims "Tarik is not here," the artifact dims, indicating this statement is a lie. Therefore, it can be deduced that Tarik is actually present in the room.

When Keiji enters and states, "Sofiya will arrive soon," the artifact lights up, which suggests that Keiji is telling the truth. Since the artifact only responds to the immediate truth and cannot predict the future, the illumination of the artifact implies that Sofiya is indeed on the verge of arriving, or her arrival is inevitable and imminent at that moment.

From these observations, it can be deduced that Tarik is present in the room, concealed or not immediately apparent to Zuri, and Sofiya is very close to arriving at the room where the artifact is located.