Step 1
Objects: Red balloon, Blue balloon, Green balloon, Yellow balloon, Purple balloon, Picnic blanket

Step 2
General Objects: Red balloon, Blue balloon, Green balloon, Yellow balloon, Purple balloon, Picnic blanket
Text in the Image: N/A
Objects that specifically refer to the Proper Noun of the Real World: N/A

Step 3
triplets: [Red balloon, General Objects, is above, Picnic blanket, General Objects]
[Blue balloon, General Objects, is above, Picnic blanket, General Objects]
[Green balloon, General Objects, is above, Picnic blanket, General Objects]
[Yellow balloon, General Objects, is above, Picnic blanket, General Objects]
[Purple balloon, General Objects, is above, Picnic blanket, General Objects]

Step 4
(1) Node with max degree: Picnic blanket.
(2) Location of Picnic blanket: [Spanning the lower part of the canvas].
(3) Location of Red balloon, Blue balloon, Green balloon, Yellow balloon, Purple balloon: 
Red balloon: [Above the left side of the Picnic blanket];
Blue balloon: [Above the left-center of the Picnic blanket];
Green balloon: [Directly above the center of the Picnic blanket];
Yellow balloon: [Above the right-center of the Picnic blanket];
Purple balloon: [Above the right side of the Picnic blanket].

Step 5
Bounding Boxes of the Objects:
Red balloon, General Objects: [0.150, 0.100, 0.250, 0.300]
Blue balloon, General Objects: [0.250, 0.100, 0.350, 0.300]
Green balloon, General Objects: [0.350, 0.100, 0.450, 0.300]
Yellow balloon, General Objects: [0.450, 0.100, 0.550, 0.300]
Purple balloon, General Objects: [0.550, 0.100, 0.650, 0.300]
Picnic blanket, General Objects: [0.100, 0.600, 0.900, 0.900]

Step 6
{
  "Red Balloon": {"phrase": "Red balloon","coordinates": [0.150, 0.100, 0.250, 0.300]},
  "Blue Balloon": {"phrase": "Blue balloon","coordinates": [0.250, 0.100, 0.350, 0.300]},
  "Green Balloon": {"phrase": "Green balloon","coordinates": [0.350, 0.100, 0.450, 0.300]},
  "Yellow Balloon": {"phrase": "Yellow balloon","coordinates": [0.450, 0.100, 0.550, 0.300]},
  "Purple Balloon": {"phrase": "Purple balloon","coordinates": [0.550, 0.100, 0.650, 0.300]},
  "Picnic Blanket": {"phrase": "Picnic blanket","coordinates": [0.100, 0.600, 0.900, 0.900]}
}