On which side of the picture is the tray?
The tray is on the left of the image.
    src        edge_attr  dst
0     0   to the left of    4
1     0   to the left of    3
2     0   to the left of    8
3     2   to the left of    7
4     2   to the left of    6
5     3  to the right of    0
6     4       sitting on    3
7     4  to the right of    0
8     6  to the right of    2
9     6  to the right of    8
10    7       hanging on    6
11    7  to the right of    2
12    8   to the left of    6
13    8  to the right of    0