Do you see computers to the left of the monitor?
No, there is a pillow to the left of the monitor.
    src        edge_attr  dst
0     0   to the left of   12
1     0  to the right of    1
2     0   to the left of   18
3     1               on   13
4     1  to the right of    7
..  ...              ...  ...
60   19   to the left of   16
61   19   to the left of    8
62   20   to the left of   14
63   20   to the left of    8
64   21  to the right of   15

[65 rows x 3 columns]