Step 1
Objects: Cat, Wooden Floor, Bookshelf

Step 2
General Objects: Cat, Wooden Floor, Bookshelf
Text in the Image: N/A
Objects that specifically refer to the Proper Noun of the Real World: N/A

Step 3
triplets: [Cat, General Objects, is lying on, Wooden Floor, General Objects][Cat, General Objects, is in front of, Bookshelf, General Objects][Wooden Floor, General Objects, is under, Cat, General Objects][Bookshelf, General Objects, is behind, Cat, General Objects]

Step 4
(1) Node with max degree: Cat.
(2) Location of Cat: [Center of the canvas].
(3) Location of Wooden Floor, Bookshelf: Wooden Floor: [Spanning the entire bottom part of the canvas]; Bookshelf: [Directly behind the Cat, spanning the upper part of the canvas].

Step 5
Bounding Boxes of the Objects:
Cat, General Objects: [0.400, 0.400, 0.600, 0.600] - The cat should be central in the image, occupying a moderate space.
Wooden Floor, General Objects: [0.000, 0.500, 1.000, 1.000] - The wooden floor spans the entire lower portion of the canvas.
Bookshelf, General Objects: [0.200, 0.100, 0.800, 0.500] - The bookshelf is directly behind the cat, occupying the upper part of the canvas.

Step 6
{"Cat": {"phrase": "Cat","coordinates": [0.400, 0.400, 0.600, 0.600]},
 "Wooden Floor": {"phrase": "Wooden Floor","coordinates": [0.000, 0.500, 1.000, 1.000]},
 "Bookshelf": {"phrase": "Bookshelf","coordinates": [0.200, 0.100, 0.800, 0.500]}}