Step 1
Objects: Black Headphones, Green Laptop

Step 2
General Objects: Black Headphones, Green Laptop
Text in the Image: N/A
Objects that specifically refer to the Proper Noun of the Real World: N/A

Step 3
triplets: [Black Headphones, General Objects, are next to, Green Laptop, General Objects]

Step 4
(1) Node with max degree: Black Headphones. (2) Location of Black Headphones: [Center-left of the canvas]. (3) Location of Green Laptop: [Center-right of the canvas, adjacent to the Black Headphones].

Step 5
Bounding Boxes of the Objects:
Black Headphones, General Objects: [0.200, 0.400, 0.400, 0.600] - Positioned towards the center-left of the canvas.
Green Laptop, General Objects: [0.500, 0.400, 0.700, 0.600] - Positioned towards the center-right of the canvas.

Step 6
{"Black Headphones": {"phrase": "Black Headphones","coordinates": [0.200, 0.400, 0.400, 0.600]},"Green Laptop": {"phrase": "Green Laptop","coordinates": [0.500, 0.400, 0.700, 0.600]}}