Step 1
Objects: a brown apple, a green horse

Step 2
General Objects: a brown apple, a green horse
Text in the Image: N/A
Objects that specifically refer to the Proper Noun of the Real World: N/A

Step 3
triplets: [a brown apple, General Objects, is near, a green horse, General Objects]
          [a green horse, General Objects, is near, a brown apple, General Objects]

Step 4
(1) Node with max degree: a brown apple and a green horse (both have the same degree).
(2) Location of a brown apple: [Lower left of the canvas].
(3) Location of a green horse: [Lower right of the canvas].

Step 5
Bounding Boxes of the Objects:
a brown apple, General Objects: [0.100, 0.550, 0.300, 0.850] - Located towards the lower left part of the canvas.
a green horse, General Objects: [0.700, 0.550, 0.900, 0.850] - Located towards the lower right part of the canvas.

Step 6
{
  "Brown Apple": {
    "phrase": "a brown apple",
    "coordinates": [0.100, 0.550, 0.300, 0.850]
  },
  "Green Horse": {
    "phrase": "a green horse",
    "coordinates": [0.700, 0.550, 0.900, 0.850]
  }
}