Step 1
Objects: Yellow Pencil, Green Desk

Step 2
General Objects: Yellow Pencil, Green Desk
Text in the Image: N/A
Objects that specifically refer to the Proper Noun of the Real World: N/A

Step 3
triplets: [Yellow Pencil, General Objects, is on top of, Green Desk, General Objects]

Step 4
(1) Node with max degree: Green Desk.
(2) Location of Green Desk: [Center of the canvas].
(3) Location of Yellow Pencil: [Center-top of the Green Desk].

Step 5
Bounding Boxes of the Objects:
Green Desk, General Objects: [0.100, 0.400, 0.900, 0.800] - The desk occupies a central position in the image.
Yellow Pencil, General Objects: [0.450, 0.300, 0.550, 0.400] - The pencil is placed on top of the desk, centrally aligned.

Step 6
{
  "Green Desk": {"phrase": "Green Desk", "coordinates": [0.100, 0.400, 0.900, 0.800]},
  "Yellow Pencil": {"phrase": "Yellow Pencil", "coordinates": [0.450, 0.300, 0.550, 0.400]}
}