Step 1
Objects: Three striped zebras (Zebra1, Zebra2, Zebra3), a cluster of pink flamingos, Grazing action

Step 2
General Objects: Three striped zebras (Zebra1, Zebra2, Zebra3), a cluster of pink flamingos
Text in the Image: N/A
Objects that specifically refer to the Proper Noun of the Real World: N/A

Step 3
triplets: 
[Zebra1, General Objects, is grazing near, a cluster of pink flamingos, General Objects]
[Zebra2, General Objects, is grazing near, a cluster of pink flamingos, General Objects]
[Zebra3, General Objects, is grazing near, a cluster of pink flamingos, General Objects]
[a cluster of pink flamingos, General Objects, is near, Zebra1, General Objects]
[a cluster of pink flamingos, General Objects, is near, Zebra2, General Objects]
[a cluster of pink flamingos, General Objects, is near, Zebra3, General Objects]

Step 4
(1) Node with max degree: a cluster of pink flamingos.
(2) Location of a cluster of pink flamingos: [Center of the canvas].
(3) Location of Zebra1, Zebra2, Zebra3: 
Zebra1: [Left of the cluster of pink flamingos];
Zebra2: [Right of the cluster of pink flamingos];
Zebra3: [Behind the cluster of pink flamingos].

Step 5
Bounding Boxes of the Objects:
Zebra1, General Objects: [0.100, 0.300, 0.300, 0.700] - Located to the left of the flamingos.
Zebra2, General Objects: [0.400, 0.300, 0.600, 0.700] - Located to the right of the flamingos.
Zebra3, General Objects: [0.250, 0.400, 0.450, 0.800] - Located behind the flamingos, slightly overlapping.
a cluster of pink flamingos, General Objects: [0.200, 0.250, 0.800, 0.750] - Centrally located, surrounded by zebras.

Step 6
{
  "Zebra1": {"phrase": "Striped Zebra", "coordinates": [0.100, 0.300, 0.300, 0.700]},
  "Zebra2": {"phrase": "Striped Zebra", "coordinates": [0.400, 0.300, 0.600, 0.700]},
  "Zebra3": {"phrase": "Striped Zebra", "coordinates": [0.250, 0.400, 0.450, 0.800]},
  "Pink Flamingos": {"phrase": "a cluster of pink flamingos", "coordinates": [0.200, 0.250, 0.800, 0.750]}
}