Step 1
Objects: Sign, Text 'Google Brain Toronto'

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

Step 3
triplets: [Sign, General Objects, displays, Text 'Google Brain Toronto', Text in the Image]

Step 4
(1) Node with max degree: Sign.
(2) Location of Sign: [Center of the canvas].
(3) Location of Text 'Google Brain Toronto': [Center of the Sign, as it is displayed on it].

Step 5
Bounding Boxes of the Objects:
Sign, General Objects: [0.100, 0.200, 0.900, 0.800] - The sign occupies a central position in the image, not covering the entire canvas but significant enough to be prominent.
Text 'Google Brain Toronto', Text in the Image: [0.200, 0.400, 0.800, 0.600] - The text is centrally placed on the sign.

Step 6
{
  "Sign": {
    "phrase": "Sign",
    "coordinates": [0.100, 0.200, 0.900, 0.800]
  },
  "Google Brain Toronto": {
    "phrase": "Text 'Google Brain Toronto'",
    "coordinates": [0.200, 0.400, 0.800, 0.600]
  }
}