In a small art gallery, there is a circular room with four equally spaced, large sculptures placed in the center, blocking direct lines of sight across the room. Each sculpture is shaped differently, allowing for different spaces and gaps through which visitors can catch glimpses of the other side of the room. Consider there are four friends named Leilani, Dmitri, Jia, and Kwame, who are art enthusiasts visiting this gallery.

Leilani enters the room first and is immediately captivated by a dynamic modern art piece. She positions herself directly in front of it, facing the sculpture with her back toward the center of the room. As Leilani focuses intently on the art, she cannot see the opposite side of the room due to the sculpture's presence and her current orientation.

Dmitri walks in next, drawn to a classical sculpture adjacent to Leilani's position. He stands to the side of the sculpture in such a way that he can both admire the art and keep an eye on Leilani, whom he can see clearly. From his vantage point, Dmitri also has a line of sight through a narrow space between two sculptures, offering a limited view of the room's entrance.

Jia, the third friend, enters and immediately notices the modern art piece that's captivating Leilani. She decides to get a closer look but stands on the opposite side of the sculpture from Leilani, facing the room's entrance. This allows her to observe the entrance and Leilani simultaneously.

Finally, Kwame enters the room and is intrigued by a kinetic art piece that's installed between Dmitri and Jia. He positions himself so he's facing this kinetic sculpture, which aligns him with his back towards the room's entrance and a side view of Jia. 

Given their positions and the obstructions created by the installations, can Leilani see any of her friends? Whom can Dmitri see upon entering the room? Can Jia observe anybody when she takes her position, and similarly, when Kwame finds his spot, who can he notice around him?
Provide a brief response.
Leilani is focused on a sculpture with her back to the room's center and consequently the entrance; she cannot see her friends or the entrance due to the obstruction caused by the sculpture she's examining. Her concentration on the piece before her and her orientation prevent her from noticing the others as they enter and move within the room.

When Dmitri walks in and positions himself at the classical sculpture adjacent to Leilani's position, he can maintain a visual on Leilani because he is standing to the side and has angled himself to keep her within view. Considering his deliberate position, he can observe Leilani while also peering through the space between two sculptures to catch a glimpse of anyone entering the room. However, this limited view only permits him to see the entrance, and not necessarily any specific individual unless they are entering or directly located at the entrance.

Jia, upon her arrival, chooses a spot on the opposite side of the sculpture facing Leilani, which gives her a direct view of both Leilani and the entrance. Given that she is facing the entrance, she can see Leilani and anyone entering the room like Dmitri earlier, but she cannot see Kwame, who enters last, because he is obscured by the kinetic sculpture he is focusing on.

Finally, Kwame's position in front of the kinetic sculpture places Jia within his peripheral vision since he has a side view of her. He cannot see Leilani because the sculpture Jia is observing obstructs his view, and Leilani is not in his line of sight due to her position opposite Jia. Kwame also cannot see Dmitri since the kinetic sculpture he is interested in blocks his view in Dmitri's direction, and his back is to the entrance, not allowing him to see any individuals coming into the room without turning around.