Step 1
Objects: a black taxi, a yellow tire

Step 2
General Objects: a black taxi, a yellow tire
Text in the Image: N/A
Objects that specifically refer to the Proper Noun of the Real World: N/A

Step 3
triplets: [a black taxi, General Objects, has, a yellow tire, General Objects]

Step 4
(1) Node with max degree: a black taxi.
(2) Location of a black taxi: [Center of the canvas].
(3) Location of a yellow tire: [Near the rear of the black taxi, slightly to the left side].

Step 5
Bounding Boxes of the Objects:
a black taxi, General Objects: [0.200, 0.200, 0.800, 0.800] - The taxi occupies a central position in the image.
a yellow tire, General Objects: [0.150, 0.600, 0.350, 0.800] - The tire is positioned near the rear left side of the taxi.

Step 6
{"Taxi": {"phrase": "a black taxi", "coordinates": [0.200, 0.200, 0.800, 0.800]}, "Tire": {"phrase": "a yellow tire", "coordinates": [0.150, 0.600, 0.350, 0.800]}}