Step 1
Objects: Street Sign, Text of 'Main Street'

Step 2
General Objects: Street Sign
Text in the Image: Text of 'Main Street'
Objects that specifically refer to the Proper Noun of the Real World: N/A

Step 3
triplets: [Street Sign, General Objects, displays, Text of 'Main Street', Text in the Image]

Step 4
(1) Node with max degree: Street Sign.
(2) Location of Street Sign: [Center of the canvas].
(3) Location of Text of 'Main Street': [Centered on the Street Sign].

Step 5
Bounding Boxes of the Objects:
Street Sign, General Objects: [0.200, 0.200, 0.800, 0.800] - The street sign is centrally located in the image.
Text of 'Main Street', Text in the Image: [0.300, 0.400, 0.700, 0.500] - The text is centered on the street sign.

Step 6
{
  "Street Sign": {
    "phrase": "Street Sign",
    "coordinates": [0.200, 0.200, 0.800, 0.800]
  },
  "Main Street": {
    "phrase": "Text of 'Main Street'",
    "coordinates": [0.300, 0.400, 0.700, 0.500]
  }
}