Step 1
Objects: Blackboard, Text of 'Math Equations'

Step 2
General Objects: Blackboard
Text in the Image: Text of 'Math Equations'
Objects that specifically refer to the Proper Noun of the Real World: N/A

Step 3
triplets: [Blackboard, General Objects, has, Text of 'Math Equations', Text in the Image]

Step 4
(1) Node with max degree: Blackboard.
(2) Location of Blackboard: [Center of the canvas].
(3) Location of Text of 'Math Equations': [Center of the Blackboard].

Step 5
Bounding Boxes of the Objects:
Blackboard, General Objects: [0.100, 0.100, 0.900, 0.900] - The blackboard occupies a large central part of the canvas.
Text of 'Math Equations', Text in the Image: [0.300, 0.400, 0.700, 0.500] - The text is centrally located on the blackboard.

Step 6
{
  "Blackboard": {
    "phrase": "Blackboard",
    "coordinates": [0.100, 0.100, 0.900, 0.900]
  },
  "Math Equations": {
    "phrase": "Text of 'Math Equations'",
    "coordinates": [0.300, 0.400, 0.700, 0.500]
  }
}