Step 1
Objects: police motorcycle(1), police motorcycle(2), police motorcycle(3), Crosswalk

Step 2
General Objects: police motorcycle(1), police motorcycle(2), police motorcycle(3), Crosswalk
Text in the Image: N/A
Objects that specifically refer to the Proper Noun of the Real World: N/A

Step 3
triplets: [police motorcycle(1), General Objects, is at, Crosswalk, General Objects]
[police motorcycle(2), General Objects, is at, Crosswalk, General Objects]
[police motorcycle(3), General Objects, is at, Crosswalk, General Objects]

Step 4
(1) Node with max degree: Crosswalk.
(2) Location of Crosswalk: [Spanning the entire middle horizontal section of the canvas].
(3) Location of police motorcycle(1), police motorcycle(2), police motorcycle(3):
police motorcycle(1): [Middle left of the canvas];
police motorcycle(2): [Center of the canvas];
police motorcycle(3): [Middle right of the canvas].

Step 5
Bounding Boxes of the Objects:
police motorcycle(1), General Objects: [0.100, 0.400, 0.300, 0.600] - Located towards the middle left part of the canvas.
police motorcycle(2), General Objects: [0.400, 0.400, 0.600, 0.600] - Centrally located in the canvas.
police motorcycle(3), General Objects: [0.700, 0.400, 0.900, 0.600] - Located towards the middle right part of the canvas.
Crosswalk, General Objects: [0.000, 0.390, 1.000, 0.610] - The crosswalk spans the entire middle horizontal section of the canvas.

Step 6
{
  "Police Motorcycle1": {"phrase": "police motorcycle", "coordinates": [0.100, 0.400, 0.300, 0.600]},
  "Police Motorcycle2": {"phrase": "police motorcycle", "coordinates": [0.400, 0.400, 0.600, 0.600]},
  "Police Motorcycle3": {"phrase": "police motorcycle", "coordinates": [0.700, 0.400, 0.900, 0.600]},
  "Crosswalk": {"phrase": "Crosswalk", "coordinates": [0.000, 0.390, 1.000, 0.610]}
}