On which side is the dispenser?
The dispenser is on the right of the image.
    src        edge_attr  dst
0     0   to the left of   27
1     0   to the left of   28
2     0   to the left of    8
3     0  to the right of    1
4     0   to the left of    7
..  ...              ...  ...
95   29  to the right of    1
96   29   to the left of   13
97   29   to the left of   21
98   30   to the left of   21
99   30  to the right of    1

[100 rows x 3 columns]