Step 1
Objects: Toilet, Sink, Shower, Bathroom

Step 2
General Objects: Toilet, Sink, Shower, Bathroom
Text in the Image: N/A
Objects that specifically refer to the Proper Noun of the Real World: N/A

Step 3
triplets: [Toilet, General Objects, is in, Bathroom, General Objects]
[Shower, General Objects, is in, Bathroom, General Objects]
[Sink, General Objects, is in, Bathroom, General Objects]
[Bathroom, General Objects, contains, Toilet, General Objects]
[Bathroom, General Objects, contains, Shower, General Objects]
[Bathroom, General Objects, contains, Sink, General Objects]

Step 4
(1) Node with max degree: Bathroom.
(2) Location of Bathroom: [Spanning the entire canvas].
(3) Location of Toilet, Sink, Shower: 
Toilet: [Lower left of the canvas];
Sink: [Upper left of the canvas];
Shower: [Upper right of the canvas].

Step 5
Bounding Boxes of the Objects:
Bathroom, General Objects: [0.000, 0.000, 1.000, 1.000] - The bathroom spans the entire canvas.
Toilet, General Objects: [0.100, 0.700, 0.300, 0.900] - Located towards the lower left part of the canvas.
Sink, General Objects: [0.100, 0.100, 0.300, 0.300] - Located towards the upper left part of the canvas.
Shower, General Objects: [0.700, 0.100, 0.900, 0.300] - Located towards the upper right part of the canvas.

Step 6
{
  "Bathroom": {"phrase": "Bathroom", "coordinates": [0.000, 0.000, 1.000, 1.000]},
  "Toilet": {"phrase": "Toilet", "coordinates": [0.100, 0.700, 0.300, 0.900]},
  "Sink": {"phrase": "Sink", "coordinates": [0.100, 0.100, 0.300, 0.300]},
  "Shower": {"phrase": "Shower", "coordinates": [0.700, 0.100, 0.900, 0.300]}
}